/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:57:47,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:57:47,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:57:47,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:57:47,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:57:47,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:57:47,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:57:47,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:57:47,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:57:47,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:57:47,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:57:47,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:57:47,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:57:47,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:57:47,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:57:47,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:57:47,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:57:47,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:57:47,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:57:47,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:57:47,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:57:47,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:57:47,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:57:47,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:57:47,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:57:47,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:57:47,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:57:47,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:57:47,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:57:47,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:57:47,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:57:47,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:57:47,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:57:47,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:57:47,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:57:47,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:57:47,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:57:47,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:57:47,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:57:47,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:57:47,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:57:47,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:57:47,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:57:47,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:57:47,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:57:47,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:57:47,837 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:57:47,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:57:47,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:57:47,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:57:47,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:57:47,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:57:47,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:57:47,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:57:47,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:57:47,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:57:47,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:57:47,840 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:57:47,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:57:47,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:57:47,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:57:47,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:57:47,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:57:47,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:57:47,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:57:47,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:57:47,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:57:47,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:57:47,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:57:47,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:57:47,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:57:47,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:57:48,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:57:48,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:57:48,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:57:48,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:57:48,146 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:57:48,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-19 00:57:48,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbf5087ab/b60d498a74cc4bcb8bbe49881c6ecccd/FLAG065b3b22e [2020-08-19 00:57:48,793 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:57:48,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-19 00:57:48,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbf5087ab/b60d498a74cc4bcb8bbe49881c6ecccd/FLAG065b3b22e [2020-08-19 00:57:49,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbf5087ab/b60d498a74cc4bcb8bbe49881c6ecccd [2020-08-19 00:57:49,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:57:49,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:57:49,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:57:49,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:57:49,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:57:49,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:57:49" (1/1) ... [2020-08-19 00:57:49,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49, skipping insertion in model container [2020-08-19 00:57:49,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:57:49" (1/1) ... [2020-08-19 00:57:49,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:57:49,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:57:49,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:57:49,585 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:57:49,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:57:49,824 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:57:49,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49 WrapperNode [2020-08-19 00:57:49,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:57:49,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:57:49,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:57:49,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:57:49,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49" (1/1) ... [2020-08-19 00:57:49,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49" (1/1) ... [2020-08-19 00:57:49,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49" (1/1) ... [2020-08-19 00:57:49,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49" (1/1) ... [2020-08-19 00:57:49,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49" (1/1) ... [2020-08-19 00:57:49,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49" (1/1) ... [2020-08-19 00:57:49,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49" (1/1) ... [2020-08-19 00:57:49,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:57:49,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:57:49,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:57:49,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:57:49,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:57:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:57:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:57:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:57:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:57:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:57:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:57:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:57:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:57:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:57:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:57:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:57:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:57:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:57:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:57:49,988 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:57:49,988 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:57:49,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:57:49,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:57:49,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:57:49,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:57:49,989 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:57:49,989 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:57:49,989 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:57:49,989 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 00:57:49,989 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:57:49,989 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:57:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:57:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:57:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:57:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:57:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:57:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:57:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:57:49,991 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:57:49,991 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:57:49,991 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:57:49,991 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:57:49,991 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:57:49,991 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:57:49,991 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:57:49,992 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:57:49,992 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:57:49,992 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:57:49,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:57:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:57:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:57:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:57:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:57:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:57:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:57:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:57:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:57:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:57:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:57:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:57:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:57:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:57:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:57:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:57:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:57:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:57:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:57:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:57:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:57:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:57:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:57:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:57:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:57:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:57:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:57:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:57:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:57:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:57:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:57:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:57:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:57:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:57:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:57:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:57:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:57:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:57:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:57:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:57:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:57:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:57:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:57:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:57:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 00:57:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:57:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:57:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:57:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:57:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:57:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:57:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:57:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:57:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:57:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:57:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:57:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:57:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:57:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:57:51,217 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:57:51,217 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:57:51,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:57:51 BoogieIcfgContainer [2020-08-19 00:57:51,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:57:51,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:57:51,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:57:51,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:57:51,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:57:49" (1/3) ... [2020-08-19 00:57:51,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b13a634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:57:51, skipping insertion in model container [2020-08-19 00:57:51,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:49" (2/3) ... [2020-08-19 00:57:51,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b13a634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:57:51, skipping insertion in model container [2020-08-19 00:57:51,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:57:51" (3/3) ... [2020-08-19 00:57:51,237 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-19 00:57:51,248 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:57:51,259 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:57:51,275 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:57:51,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:57:51,313 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:57:51,313 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:57:51,313 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:57:51,313 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:57:51,314 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:57:51,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:57:51,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:57:51,344 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-19 00:57:51,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:57:51,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:51,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:51,361 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:51,367 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-19 00:57:51,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:51,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714811039] [2020-08-19 00:57:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,078 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:57:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:57:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:52,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714811039] [2020-08-19 00:57:52,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:52,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:57:52,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456117579] [2020-08-19 00:57:52,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:57:52,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:52,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:57:52,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:57:52,273 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-19 00:57:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:53,752 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-19 00:57:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:57:53,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 00:57:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:53,770 INFO L225 Difference]: With dead ends: 353 [2020-08-19 00:57:53,770 INFO L226 Difference]: Without dead ends: 196 [2020-08-19 00:57:53,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:57:53,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-19 00:57:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-19 00:57:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-19 00:57:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-19 00:57:53,883 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-19 00:57:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:53,884 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-19 00:57:53,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:57:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-19 00:57:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:57:53,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:53,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:53,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:57:53,889 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:53,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:53,890 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-19 00:57:53,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:53,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177314497] [2020-08-19 00:57:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,184 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:54,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:57:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:57:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:54,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177314497] [2020-08-19 00:57:54,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:54,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:57:54,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227173166] [2020-08-19 00:57:54,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:57:54,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:54,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:57:54,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:57:54,245 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-19 00:57:54,725 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:55,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:55,898 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-19 00:57:55,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:57:55,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 00:57:55,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:55,904 INFO L225 Difference]: With dead ends: 288 [2020-08-19 00:57:55,904 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 00:57:55,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:57:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 00:57:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-19 00:57:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-19 00:57:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-19 00:57:55,957 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-19 00:57:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:55,958 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-19 00:57:55,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:57:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-19 00:57:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:57:55,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:55,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:55,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:57:55,961 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:55,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:55,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-19 00:57:55,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:55,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274806847] [2020-08-19 00:57:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:56,386 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:56,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:56,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:56,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:56,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:57:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:57:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:56,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274806847] [2020-08-19 00:57:56,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:56,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:57:56,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880617941] [2020-08-19 00:57:56,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:57:56,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:56,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:57:56,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:57:56,509 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-19 00:57:56,830 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:57,123 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:57,395 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:57,639 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:58,427 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:00,782 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-19 00:58:00,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:58:00,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 00:58:00,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:00,789 INFO L225 Difference]: With dead ends: 503 [2020-08-19 00:58:00,789 INFO L226 Difference]: Without dead ends: 382 [2020-08-19 00:58:00,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:58:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-19 00:58:00,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-19 00:58:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-19 00:58:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-19 00:58:00,875 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-19 00:58:00,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:00,876 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-19 00:58:00,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:58:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-19 00:58:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 00:58:00,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:00,879 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, 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] [2020-08-19 00:58:00,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:58:00,880 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:00,880 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-19 00:58:00,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:00,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89677745] [2020-08-19 00:58:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:01,216 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:01,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:01,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:01,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:01,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:01,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:01,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:58:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:01,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:58:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:01,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:58:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:01,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89677745] [2020-08-19 00:58:01,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:01,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:58:01,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670245632] [2020-08-19 00:58:01,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:58:01,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:01,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:58:01,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:58:01,364 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-19 00:58:01,736 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:02,743 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:03,192 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:03,460 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:03,746 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:05,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:05,529 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-19 00:58:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:58:05,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 00:58:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:05,537 INFO L225 Difference]: With dead ends: 992 [2020-08-19 00:58:05,537 INFO L226 Difference]: Without dead ends: 711 [2020-08-19 00:58:05,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:58:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-19 00:58:05,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-19 00:58:05,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-19 00:58:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-19 00:58:05,680 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-19 00:58:05,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:05,681 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-19 00:58:05,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:58:05,681 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-19 00:58:05,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 00:58:05,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:05,684 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, 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, 1, 1, 1, 1] [2020-08-19 00:58:05,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:58:05,685 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:05,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:05,685 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-19 00:58:05,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:05,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214498416] [2020-08-19 00:58:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:05,948 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:05,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:05,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:05,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:06,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:58:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:58:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:58:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:06,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 00:58:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:06,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214498416] [2020-08-19 00:58:06,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:06,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:58:06,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292957332] [2020-08-19 00:58:06,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:58:06,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:06,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:58:06,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:58:06,054 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-19 00:58:06,413 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:07,519 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:07,791 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:08,053 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:08,765 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:10,305 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-19 00:58:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 00:58:10,306 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 00:58:10,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:10,317 INFO L225 Difference]: With dead ends: 1565 [2020-08-19 00:58:10,317 INFO L226 Difference]: Without dead ends: 1027 [2020-08-19 00:58:10,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:58:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-19 00:58:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-19 00:58:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-19 00:58:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-19 00:58:10,539 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-19 00:58:10,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:10,541 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-19 00:58:10,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:58:10,542 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-19 00:58:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:58:10,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:10,545 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, 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, 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, 1] [2020-08-19 00:58:10,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:58:10,546 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:10,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:10,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-19 00:58:10,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:10,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859608124] [2020-08-19 00:58:10,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,824 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:58:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:58:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:10,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:58:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 00:58:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:11,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859608124] [2020-08-19 00:58:11,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:11,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:58:11,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723365420] [2020-08-19 00:58:11,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:58:11,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:11,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:58:11,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:58:11,028 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-19 00:58:12,203 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:12,485 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:58:12,794 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:13,073 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:14,436 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-19 00:58:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:58:14,437 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-19 00:58:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:14,452 INFO L225 Difference]: With dead ends: 1894 [2020-08-19 00:58:14,452 INFO L226 Difference]: Without dead ends: 1101 [2020-08-19 00:58:14,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:58:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-19 00:58:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-19 00:58:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-19 00:58:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-19 00:58:14,626 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-19 00:58:14,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:14,628 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-19 00:58:14,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:58:14,628 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-19 00:58:14,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:58:14,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:14,632 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, 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, 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, 1] [2020-08-19 00:58:14,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:58:14,632 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:14,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:14,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-19 00:58:14,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:14,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597140997] [2020-08-19 00:58:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:14,905 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:14,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:14,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:14,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:14,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:58:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:58:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:15,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:15,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:15,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:15,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:15,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:15,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:58:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:15,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 00:58:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:15,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597140997] [2020-08-19 00:58:15,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:15,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:58:15,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856097712] [2020-08-19 00:58:15,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:58:15,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:15,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:58:15,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:58:15,112 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-19 00:58:15,771 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:16,065 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:16,298 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:17,162 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:17,449 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:17,706 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:19,562 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-19 00:58:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:58:19,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-19 00:58:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:19,574 INFO L225 Difference]: With dead ends: 1948 [2020-08-19 00:58:19,574 INFO L226 Difference]: Without dead ends: 1129 [2020-08-19 00:58:19,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:58:19,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-19 00:58:19,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-19 00:58:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-19 00:58:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-19 00:58:19,774 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-19 00:58:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:19,775 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-19 00:58:19,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:58:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-19 00:58:19,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:58:19,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:19,778 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, 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, 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, 1] [2020-08-19 00:58:19,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:58:19,779 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:19,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-19 00:58:19,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:19,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337009961] [2020-08-19 00:58:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,055 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:58:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:58:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:58:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 00:58:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:20,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337009961] [2020-08-19 00:58:20,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:20,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:58:20,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858114202] [2020-08-19 00:58:20,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:58:20,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:20,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:58:20,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:58:20,250 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-19 00:58:20,564 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:21,142 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:24,335 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-19 00:58:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:58:24,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-19 00:58:24,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:24,352 INFO L225 Difference]: With dead ends: 2919 [2020-08-19 00:58:24,352 INFO L226 Difference]: Without dead ends: 2084 [2020-08-19 00:58:24,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 00:58:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-19 00:58:24,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-19 00:58:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-19 00:58:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-19 00:58:24,822 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-19 00:58:24,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:24,823 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-19 00:58:24,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:58:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-19 00:58:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 00:58:24,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:24,827 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, 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, 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, 1, 1, 1, 1, 1] [2020-08-19 00:58:24,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:58:24,828 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:24,828 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-19 00:58:24,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:24,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318432910] [2020-08-19 00:58:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,104 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:25,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:58:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 00:58:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 00:58:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:25,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318432910] [2020-08-19 00:58:25,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:25,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:58:25,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037078040] [2020-08-19 00:58:25,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:58:25,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:25,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:58:25,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:58:25,226 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-19 00:58:25,581 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:28,945 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-19 00:58:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 00:58:28,946 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-19 00:58:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:28,970 INFO L225 Difference]: With dead ends: 3491 [2020-08-19 00:58:28,971 INFO L226 Difference]: Without dead ends: 3488 [2020-08-19 00:58:28,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:58:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-19 00:58:29,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-19 00:58:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-19 00:58:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-19 00:58:29,541 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-19 00:58:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:29,543 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-19 00:58:29,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:58:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-19 00:58:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-19 00:58:29,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:29,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2020-08-19 00:58:29,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:58:29,555 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:29,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2137087651, now seen corresponding path program 1 times [2020-08-19 00:58:29,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:29,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905810106] [2020-08-19 00:58:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,834 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:29,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:58:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:58:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:58:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 00:58:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 00:58:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-19 00:58:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 00:58:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-08-19 00:58:30,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905810106] [2020-08-19 00:58:30,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:58:30,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 00:58:30,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683075669] [2020-08-19 00:58:30,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 00:58:30,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:30,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 00:58:30,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:58:30,155 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 14 states. [2020-08-19 00:58:30,652 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:30,901 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:31,126 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:31,682 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:33,308 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:35,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:35,729 INFO L93 Difference]: Finished difference Result 5611 states and 7325 transitions. [2020-08-19 00:58:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-19 00:58:35,730 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2020-08-19 00:58:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:35,749 INFO L225 Difference]: With dead ends: 5611 [2020-08-19 00:58:35,749 INFO L226 Difference]: Without dead ends: 3113 [2020-08-19 00:58:35,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=364, Invalid=1528, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 00:58:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2020-08-19 00:58:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 2736. [2020-08-19 00:58:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2020-08-19 00:58:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3204 transitions. [2020-08-19 00:58:36,258 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3204 transitions. Word has length 166 [2020-08-19 00:58:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:36,259 INFO L479 AbstractCegarLoop]: Abstraction has 2736 states and 3204 transitions. [2020-08-19 00:58:36,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 00:58:36,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3204 transitions. [2020-08-19 00:58:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-19 00:58:36,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:36,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:58:36,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:58:36,268 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:36,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-19 00:58:36,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:36,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522257217] [2020-08-19 00:58:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,537 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:36,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:58:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:58:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:58:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 00:58:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-19 00:58:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-19 00:58:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 00:58:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-19 00:58:36,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522257217] [2020-08-19 00:58:36,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:58:36,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 00:58:36,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851880178] [2020-08-19 00:58:36,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:58:36,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:36,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:58:36,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:58:36,733 INFO L87 Difference]: Start difference. First operand 2736 states and 3204 transitions. Second operand 10 states. [2020-08-19 00:58:37,686 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:40,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:40,055 INFO L93 Difference]: Finished difference Result 4533 states and 5525 transitions. [2020-08-19 00:58:40,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 00:58:40,055 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-19 00:58:40,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:40,067 INFO L225 Difference]: With dead ends: 4533 [2020-08-19 00:58:40,067 INFO L226 Difference]: Without dead ends: 1835 [2020-08-19 00:58:40,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 00:58:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-19 00:58:40,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1269. [2020-08-19 00:58:40,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-19 00:58:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1471 transitions. [2020-08-19 00:58:40,396 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1471 transitions. Word has length 171 [2020-08-19 00:58:40,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:40,396 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1471 transitions. [2020-08-19 00:58:40,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:58:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1471 transitions. [2020-08-19 00:58:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-19 00:58:40,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:40,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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] [2020-08-19 00:58:40,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:58:40,401 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:40,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:40,402 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-19 00:58:40,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:40,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131642232] [2020-08-19 00:58:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,725 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:58:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:58:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:58:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 00:58:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 00:58:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:40,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:41,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:58:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:41,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:41,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:58:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:41,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 00:58:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:41,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 00:58:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 00:58:41,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131642232] [2020-08-19 00:58:41,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:58:41,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 00:58:41,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572618388] [2020-08-19 00:58:41,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 00:58:41,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:41,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 00:58:41,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:58:41,113 INFO L87 Difference]: Start difference. First operand 1269 states and 1471 transitions. Second operand 19 states. [2020-08-19 00:58:41,958 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:42,425 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:58:42,675 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:58:42,914 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:58:43,720 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:44,372 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:44,808 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191