/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:55:08,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:55:08,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:55:08,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:55:08,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:55:08,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:55:08,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:55:08,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:55:08,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:55:08,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:55:08,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:55:08,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:55:08,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:55:08,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:55:08,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:55:08,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:55:08,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:55:08,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:55:08,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:55:08,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:55:08,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:55:08,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:55:08,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:55:08,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:55:08,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:55:08,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:55:08,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:55:08,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:55:08,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:55:08,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:55:08,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:55:08,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:55:08,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:55:08,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:55:08,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:55:08,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:55:08,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:55:08,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:55:08,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:55:08,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:55:08,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:55:08,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:55:08,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:55:08,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:55:08,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:55:08,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:55:08,813 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:55:08,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:55:08,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:55:08,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:55:08,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:55:08,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:55:08,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:55:08,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:55:08,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:55:08,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:55:08,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:55:08,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:55:08,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:55:08,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:55:08,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:55:08,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:55:08,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:55:08,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:55:08,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:55:08,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:55:08,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:55:08,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:55:08,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:55:08,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:55:08,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:55:08,818 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:55:09,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:55:09,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:55:09,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:55:09,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:55:09,106 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:55:09,107 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-18 16:55:09,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98fb34bb2/88662b8694b54ebab17c75d838d16e2d/FLAG1f49af6bc [2020-08-18 16:55:09,663 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:55:09,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-18 16:55:09,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98fb34bb2/88662b8694b54ebab17c75d838d16e2d/FLAG1f49af6bc [2020-08-18 16:55:09,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98fb34bb2/88662b8694b54ebab17c75d838d16e2d [2020-08-18 16:55:10,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:55:10,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:55:10,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:55:10,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:55:10,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:55:10,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:55:09" (1/1) ... [2020-08-18 16:55:10,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10, skipping insertion in model container [2020-08-18 16:55:10,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:55:09" (1/1) ... [2020-08-18 16:55:10,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:55:10,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:55:10,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:55:10,481 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:55:10,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:55:10,617 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:55:10,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10 WrapperNode [2020-08-18 16:55:10,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:55:10,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:55:10,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:55:10,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:55:10,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10" (1/1) ... [2020-08-18 16:55:10,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10" (1/1) ... [2020-08-18 16:55:10,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10" (1/1) ... [2020-08-18 16:55:10,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10" (1/1) ... [2020-08-18 16:55:10,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10" (1/1) ... [2020-08-18 16:55:10,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10" (1/1) ... [2020-08-18 16:55:10,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10" (1/1) ... [2020-08-18 16:55:10,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:55:10,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:55:10,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:55:10,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:55:10,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:55:10,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:55:10,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:55:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:55:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:55:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:55:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:55:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:55:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:55:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:55:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:55:10,788 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:55:10,788 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:55:10,788 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:55:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:55:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:55:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:55:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:55:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:55:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:55:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:55:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:55:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:55:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:55:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:55:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:55:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:55:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:55:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:55:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:55:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:55:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:55:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:55:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:55:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:55:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:55:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:55:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:55:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:55:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:55:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:55:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:55:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:55:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:55:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:55:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:55:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:55:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:55:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:55:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:55:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:55:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:55:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:55:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:55:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:55:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:55:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:55:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:55:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:55:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:55:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:55:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:55:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:55:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:55:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:55:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:55:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:55:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:55:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:55:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:55:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:55:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:55:10,799 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:55:10,799 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:55:10,799 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:55:10,800 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:55:10,800 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:55:10,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:55:10,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:55:10,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:55:10,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:55:10,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:55:10,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:55:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:55:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:55:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:55:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:55:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:55:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:55:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:55:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:55:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:55:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:55:11,799 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:55:11,799 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:55:11,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:55:11 BoogieIcfgContainer [2020-08-18 16:55:11,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:55:11,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:55:11,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:55:11,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:55:11,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:55:09" (1/3) ... [2020-08-18 16:55:11,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714e9e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:55:11, skipping insertion in model container [2020-08-18 16:55:11,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:10" (2/3) ... [2020-08-18 16:55:11,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714e9e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:55:11, skipping insertion in model container [2020-08-18 16:55:11,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:55:11" (3/3) ... [2020-08-18 16:55:11,812 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-18 16:55:11,822 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:55:11,829 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:55:11,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:55:11,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:55:11,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:55:11,862 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:55:11,862 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:55:11,862 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:55:11,862 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:55:11,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:55:11,863 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:55:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-18 16:55:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:55:11,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:11,894 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] [2020-08-18 16:55:11,895 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-18 16:55:11,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:11,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260868376] [2020-08-18 16:55:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:12,506 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:12,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:12,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:12,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:55:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:12,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:55:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:12,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:55:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:12,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260868376] [2020-08-18 16:55:12,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:12,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:55:12,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984669763] [2020-08-18 16:55:12,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:55:12,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:12,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:55:12,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:55:12,660 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-18 16:55:13,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:13,750 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-18 16:55:13,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:55:13,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 16:55:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:13,767 INFO L225 Difference]: With dead ends: 296 [2020-08-18 16:55:13,767 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 16:55:13,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:55:13,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 16:55:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-18 16:55:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 16:55:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-18 16:55:13,853 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-18 16:55:13,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:13,853 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-18 16:55:13,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:55:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-18 16:55:13,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:55:13,860 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:13,860 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] [2020-08-18 16:55:13,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:55:13,861 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:13,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:13,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-18 16:55:13,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:13,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406487973] [2020-08-18 16:55:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:14,254 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:14,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:14,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:14,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:14,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:55:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:14,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:55:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:14,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:55:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:14,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406487973] [2020-08-18 16:55:14,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:14,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:55:14,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48220305] [2020-08-18 16:55:14,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:55:14,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:14,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:55:14,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:55:14,302 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-18 16:55:14,693 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:15,449 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-18 16:55:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:55:15,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 16:55:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:15,452 INFO L225 Difference]: With dead ends: 225 [2020-08-18 16:55:15,452 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 16:55:15,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:55:15,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 16:55:15,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 16:55:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 16:55:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-18 16:55:15,492 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-18 16:55:15,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:15,493 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-18 16:55:15,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:55:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-18 16:55:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 16:55:15,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:15,496 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] [2020-08-18 16:55:15,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:55:15,496 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:15,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:15,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-18 16:55:15,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:15,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521040318] [2020-08-18 16:55:15,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:15,801 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:15,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:15,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:15,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:15,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:55:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:15,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:55:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:55:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:15,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521040318] [2020-08-18 16:55:15,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:15,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:55:15,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504774693] [2020-08-18 16:55:15,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:55:15,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:15,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:55:15,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:55:15,925 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-18 16:55:16,267 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:16,590 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:16,825 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:17,042 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:18,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:18,122 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-18 16:55:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:55:18,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 16:55:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:18,133 INFO L225 Difference]: With dead ends: 238 [2020-08-18 16:55:18,133 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 16:55:18,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:55:18,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 16:55:18,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 16:55:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 16:55:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-18 16:55:18,170 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-18 16:55:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:18,171 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-18 16:55:18,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:55:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-18 16:55:18,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 16:55:18,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:18,173 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] [2020-08-18 16:55:18,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:55:18,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:18,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:18,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-18 16:55:18,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:18,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846623076] [2020-08-18 16:55:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,475 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:18,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:55:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 16:55:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 16:55:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 16:55:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:18,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846623076] [2020-08-18 16:55:18,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:18,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:55:18,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642077321] [2020-08-18 16:55:18,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:55:18,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:18,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:55:18,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:55:18,581 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-18 16:55:18,878 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:19,938 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:20,545 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-18 16:55:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:55:20,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-18 16:55:20,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:20,550 INFO L225 Difference]: With dead ends: 338 [2020-08-18 16:55:20,550 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 16:55:20,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:55:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 16:55:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-18 16:55:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-18 16:55:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-18 16:55:20,632 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-18 16:55:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:20,633 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-18 16:55:20,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:55:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-18 16:55:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-18 16:55:20,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:20,635 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] [2020-08-18 16:55:20,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:55:20,635 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:20,636 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-18 16:55:20,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:20,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504304243] [2020-08-18 16:55:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,888 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:55:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 16:55:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 16:55:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:21,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 16:55:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:21,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504304243] [2020-08-18 16:55:21,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:21,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:55:21,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243615462] [2020-08-18 16:55:21,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:55:21,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:21,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:55:21,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:55:21,034 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-18 16:55:21,416 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:22,706 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:22,958 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:23,220 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:23,438 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:24,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:24,022 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-18 16:55:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:55:24,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-18 16:55:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:24,030 INFO L225 Difference]: With dead ends: 555 [2020-08-18 16:55:24,030 INFO L226 Difference]: Without dead ends: 378 [2020-08-18 16:55:24,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:55:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-18 16:55:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-18 16:55:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-18 16:55:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-18 16:55:24,099 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-18 16:55:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:24,100 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-18 16:55:24,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:55:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-18 16:55:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 16:55:24,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:24,102 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] [2020-08-18 16:55:24,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:55:24,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:24,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:24,103 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-18 16:55:24,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:24,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447610115] [2020-08-18 16:55:24,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,379 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:24,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:55:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:55:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 16:55:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:55:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 16:55:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:24,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447610115] [2020-08-18 16:55:24,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:24,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:55:24,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120702697] [2020-08-18 16:55:24,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:55:24,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:24,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:55:24,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:55:24,508 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-18 16:55:24,861 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:25,362 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:26,848 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:28,276 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-18 16:55:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:55:28,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 16:55:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:28,282 INFO L225 Difference]: With dead ends: 815 [2020-08-18 16:55:28,282 INFO L226 Difference]: Without dead ends: 627 [2020-08-18 16:55:28,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:55:28,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-18 16:55:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-18 16:55:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-18 16:55:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-18 16:55:28,389 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-18 16:55:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:28,389 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-18 16:55:28,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:55:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-18 16:55:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 16:55:28,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:28,391 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] [2020-08-18 16:55:28,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:55:28,392 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:28,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:28,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-18 16:55:28,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:28,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786091794] [2020-08-18 16:55:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,604 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:28,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:55:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:55:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 16:55:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:55:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 16:55:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:28,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786091794] [2020-08-18 16:55:28,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:28,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:55:28,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880782602] [2020-08-18 16:55:28,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:55:28,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:28,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:55:28,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:55:28,714 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-18 16:55:29,481 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:29,700 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:29,933 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:30,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:30,715 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-18 16:55:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:55:30,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 16:55:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:30,720 INFO L225 Difference]: With dead ends: 1006 [2020-08-18 16:55:30,720 INFO L226 Difference]: Without dead ends: 601 [2020-08-18 16:55:30,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:55:30,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-18 16:55:30,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-18 16:55:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-18 16:55:30,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-18 16:55:30,815 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-18 16:55:30,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:30,815 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-18 16:55:30,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:55:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-18 16:55:30,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 16:55:30,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:30,817 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] [2020-08-18 16:55:30,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:55:30,818 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:30,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:30,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-18 16:55:30,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:30,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540562917] [2020-08-18 16:55:30,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,081 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:31,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:55:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:55:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 16:55:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:55:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 16:55:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:31,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540562917] [2020-08-18 16:55:31,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:31,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:55:31,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361450792] [2020-08-18 16:55:31,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:55:31,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:31,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:55:31,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:55:31,230 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-18 16:55:31,795 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:32,027 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:32,261 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:32,898 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:33,125 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:55:33,377 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:33,596 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:34,511 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-18 16:55:34,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 16:55:34,511 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 16:55:34,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:34,516 INFO L225 Difference]: With dead ends: 1144 [2020-08-18 16:55:34,516 INFO L226 Difference]: Without dead ends: 612 [2020-08-18 16:55:34,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 16:55:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-18 16:55:34,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-18 16:55:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-18 16:55:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-18 16:55:34,634 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-18 16:55:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:34,634 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-18 16:55:34,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:55:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-18 16:55:34,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 16:55:34,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:34,637 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 16:55:34,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:55:34,638 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:34,638 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-18 16:55:34,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:34,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757821489] [2020-08-18 16:55:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,906 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:55:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:55:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 16:55:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 16:55:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:55:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:55:35,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757821489] [2020-08-18 16:55:35,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:55:35,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:55:35,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413111972] [2020-08-18 16:55:35,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:55:35,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:35,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:55:35,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:55:35,136 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-18 16:55:35,834 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:36,558 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:37,312 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:55:37,600 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:55:37,887 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:55:38,128 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:55:38,406 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:55:38,654 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:55:39,095 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-18 16:55:39,341 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:55:39,635 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:55:39,905 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:55:41,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:41,778 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-18 16:55:41,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 16:55:41,779 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-18 16:55:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:41,786 INFO L225 Difference]: With dead ends: 1664 [2020-08-18 16:55:41,787 INFO L226 Difference]: Without dead ends: 1125 [2020-08-18 16:55:41,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-18 16:55:41,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-18 16:55:41,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-18 16:55:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-18 16:55:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-18 16:55:41,959 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-18 16:55:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:41,959 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-18 16:55:41,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:55:41,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-18 16:55:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-18 16:55:41,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:41,962 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 16:55:41,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:55:41,962 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:41,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:41,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-18 16:55:41,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:41,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844816125] [2020-08-18 16:55:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,246 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:55:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:55:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:55:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:55:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:55:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:55:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:55:42,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844816125] [2020-08-18 16:55:42,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:42,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 16:55:42,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23581110] [2020-08-18 16:55:42,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 16:55:42,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:42,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 16:55:42,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:55:42,384 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-18 16:55:42,915 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:43,147 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:43,388 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:43,941 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:44,694 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:45,015 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:45,571 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:45,827 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:55:46,077 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:55:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:47,750 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-18 16:55:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 16:55:47,750 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-18 16:55:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:47,757 INFO L225 Difference]: With dead ends: 2205 [2020-08-18 16:55:47,757 INFO L226 Difference]: Without dead ends: 1167 [2020-08-18 16:55:47,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 16:55:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-18 16:55:47,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-18 16:55:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-18 16:55:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-18 16:55:47,961 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-18 16:55:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:47,962 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-18 16:55:47,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 16:55:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-18 16:55:47,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-18 16:55:47,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:47,966 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 16:55:47,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:55:47,966 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:47,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:47,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-18 16:55:47,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:47,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992358540] [2020-08-18 16:55:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,273 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:55:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:55:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:55:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:55:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:55:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:55:48,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992358540] [2020-08-18 16:55:48,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:48,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 16:55:48,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969340091] [2020-08-18 16:55:48,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:55:48,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:48,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:55:48,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:55:48,406 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-18 16:55:49,195 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:49,427 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:49,660 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:50,699 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:51,157 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:51,462 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:55:51,730 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:55:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:52,414 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-18 16:55:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:55:52,415 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-18 16:55:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:52,416 INFO L225 Difference]: With dead ends: 1688 [2020-08-18 16:55:52,416 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:55:52,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-18 16:55:52,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:55:52,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:55:52,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:55:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:55:52,422 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-18 16:55:52,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:52,422 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:55:52,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:55:52,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:55:52,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:55:52,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:55:52,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:55:53,725 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-18 16:55:56,093 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-18 16:55:56,590 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-18 16:55:56,926 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-18 16:55:57,424 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-18 16:55:58,443 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-18 16:55:59,544 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-18 16:55:59,707 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 16:56:00,147 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-18 16:56:00,322 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-18 16:56:00,581 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-18 16:56:00,737 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-18 16:56:01,824 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-18 16:56:01,987 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 16:56:02,775 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-18 16:56:03,054 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27 [2020-08-18 16:56:03,620 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-18 16:56:04,477 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2020-08-18 16:56:05,576 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 168 DAG size of output: 30 [2020-08-18 16:56:05,767 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:56:05,874 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-08-18 16:56:06,032 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 16:56:06,206 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 26 [2020-08-18 16:56:06,381 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-18 16:56:07,504 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2020-08-18 16:56:07,673 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 26 [2020-08-18 16:56:07,844 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 1 [2020-08-18 16:56:08,421 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30