/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:28:38,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:28:38,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:28:38,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:28:38,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:28:38,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:28:38,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:28:38,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:28:38,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:28:38,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:28:38,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:28:38,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:28:38,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:28:38,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:28:38,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:28:38,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:28:38,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:28:38,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:28:38,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:28:38,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:28:38,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:28:38,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:28:38,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:28:38,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:28:38,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:28:38,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:28:38,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:28:38,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:28:38,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:28:38,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:28:38,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:28:38,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:28:38,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:28:38,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:28:38,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:28:38,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:28:38,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:28:38,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:28:38,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:28:38,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:28:38,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:28:38,832 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 [2020-08-22 04:28:38,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:28:38,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:28:38,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:28:38,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:28:38,874 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:28:38,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:28:38,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:28:38,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:28:38,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:28:38,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:28:38,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:28:38,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:28:38,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:28:38,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:28:38,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:28:38,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:28:38,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:28:38,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:28:38,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:28:38,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:28:38,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:28:38,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:28:38,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:28:38,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:28:38,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:28:38,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:28:38,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:28:38,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:28:38,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:28:38,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:28:39,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:28:39,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:28:39,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:28:39,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:28:39,194 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:28:39,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-22 04:28:39,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91df79613/8bb6ae799c4a47b28335360986871af5/FLAGd4a18155f [2020-08-22 04:28:39,796 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:28:39,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-22 04:28:39,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91df79613/8bb6ae799c4a47b28335360986871af5/FLAGd4a18155f [2020-08-22 04:28:40,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91df79613/8bb6ae799c4a47b28335360986871af5 [2020-08-22 04:28:40,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:28:40,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:28:40,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:28:40,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:28:40,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:28:40,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:28:40" (1/1) ... [2020-08-22 04:28:40,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d265cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40, skipping insertion in model container [2020-08-22 04:28:40,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:28:40" (1/1) ... [2020-08-22 04:28:40,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:28:40,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:28:40,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:28:40,706 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:28:40,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:28:40,851 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:28:40,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40 WrapperNode [2020-08-22 04:28:40,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:28:40,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:28:40,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:28:40,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:28:40,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40" (1/1) ... [2020-08-22 04:28:40,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40" (1/1) ... [2020-08-22 04:28:40,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40" (1/1) ... [2020-08-22 04:28:40,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40" (1/1) ... [2020-08-22 04:28:40,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40" (1/1) ... [2020-08-22 04:28:40,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40" (1/1) ... [2020-08-22 04:28:40,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40" (1/1) ... [2020-08-22 04:28:40,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:28:40,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:28:40,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:28:40,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:28:40,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40" (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 [2020-08-22 04:28:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:28:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:28:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:28:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:28:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:28:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:28:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:28:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:28:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:28:41,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:28:41,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 04:28:41,025 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:28:41,026 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-22 04:28:41,026 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-22 04:28:41,026 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-22 04:28:41,026 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-22 04:28:41,027 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-22 04:28:41,027 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-22 04:28:41,027 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:28:41,027 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-22 04:28:41,027 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-22 04:28:41,028 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:28:41,028 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:28:41,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:28:41,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:28:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:28:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:28:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 04:28:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:28:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 04:28:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:28:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:28:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:28:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:28:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:28:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:28:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 04:28:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 04:28:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:28:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:28:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:28:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:28:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:28:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:28:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:28:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:28:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:28:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:28:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:28:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:28:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:28:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:28:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:28:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:28:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:28:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:28:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:28:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 04:28:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 04:28:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:28:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-22 04:28:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:28:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-22 04:28:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-22 04:28:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 04:28:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-22 04:28:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-22 04:28:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:28:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-22 04:28:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-22 04:28:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-22 04:28:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:28:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:28:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:28:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 04:28:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:28:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:28:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:28:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:28:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:28:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:28:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:28:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:28:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:28:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:28:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:28:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:28:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:28:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:28:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:28:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:28:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:28:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:28:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:28:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:28:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:28:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:28:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:28:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:28:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:28:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:28:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:28:42,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:28:42,207 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:28:42,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:28:42 BoogieIcfgContainer [2020-08-22 04:28:42,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:28:42,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:28:42,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:28:42,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:28:42,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:28:40" (1/3) ... [2020-08-22 04:28:42,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8064642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:28:42, skipping insertion in model container [2020-08-22 04:28:42,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:40" (2/3) ... [2020-08-22 04:28:42,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8064642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:28:42, skipping insertion in model container [2020-08-22 04:28:42,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:28:42" (3/3) ... [2020-08-22 04:28:42,222 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_productSimulator.cil.c [2020-08-22 04:28:42,234 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:28:42,243 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:28:42,258 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:28:42,285 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:28:42,285 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:28:42,286 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:28:42,286 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:28:42,286 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:28:42,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:28:42,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:28:42,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:28:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states. [2020-08-22 04:28:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:28:42,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:42,328 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:42,329 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:42,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2065144369, now seen corresponding path program 1 times [2020-08-22 04:28:42,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:42,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217084830] [2020-08-22 04:28:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,126 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:28:43,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:28:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:28:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:28:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:28:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:28:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:28:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 04:28:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 04:28:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:28:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:28:43,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217084830] [2020-08-22 04:28:43,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:43,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:28:43,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19224043] [2020-08-22 04:28:43,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:28:43,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:43,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:28:43,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:28:43,335 INFO L87 Difference]: Start difference. First operand 247 states. Second operand 6 states. [2020-08-22 04:28:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:45,844 INFO L93 Difference]: Finished difference Result 442 states and 585 transitions. [2020-08-22 04:28:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:28:45,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-22 04:28:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:45,864 INFO L225 Difference]: With dead ends: 442 [2020-08-22 04:28:45,864 INFO L226 Difference]: Without dead ends: 256 [2020-08-22 04:28:45,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:28:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-22 04:28:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 204. [2020-08-22 04:28:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-22 04:28:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 251 transitions. [2020-08-22 04:28:45,989 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 251 transitions. Word has length 83 [2020-08-22 04:28:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:45,990 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 251 transitions. [2020-08-22 04:28:45,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:28:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 251 transitions. [2020-08-22 04:28:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 04:28:45,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:45,996 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:45,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:28:45,997 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:45,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:45,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1458323181, now seen corresponding path program 1 times [2020-08-22 04:28:45,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:45,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339744323] [2020-08-22 04:28:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,388 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:28:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:28:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:28:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:28:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:28:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:28:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:28:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 04:28:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:28:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:28:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:28:46,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339744323] [2020-08-22 04:28:46,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:46,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:28:46,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252729165] [2020-08-22 04:28:46,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:28:46,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:46,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:28:46,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:28:46,578 INFO L87 Difference]: Start difference. First operand 204 states and 251 transitions. Second operand 7 states. [2020-08-22 04:28:47,428 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-22 04:28:49,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:49,198 INFO L93 Difference]: Finished difference Result 375 states and 480 transitions. [2020-08-22 04:28:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 04:28:49,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-22 04:28:49,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:49,204 INFO L225 Difference]: With dead ends: 375 [2020-08-22 04:28:49,204 INFO L226 Difference]: Without dead ends: 246 [2020-08-22 04:28:49,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:28:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-22 04:28:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 195. [2020-08-22 04:28:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-22 04:28:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 239 transitions. [2020-08-22 04:28:49,254 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 239 transitions. Word has length 84 [2020-08-22 04:28:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:49,254 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 239 transitions. [2020-08-22 04:28:49,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:28:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 239 transitions. [2020-08-22 04:28:49,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 04:28:49,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:49,258 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:49,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:28:49,258 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:49,258 INFO L82 PathProgramCache]: Analyzing trace with hash 481269972, now seen corresponding path program 1 times [2020-08-22 04:28:49,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:49,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758928633] [2020-08-22 04:28:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,704 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:28:49,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:28:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:28:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:28:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:28:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:28:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:28:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 04:28:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:28:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:28:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:28:49,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758928633] [2020-08-22 04:28:49,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:49,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 04:28:49,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645793415] [2020-08-22 04:28:49,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 04:28:49,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:49,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 04:28:49,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:28:49,950 INFO L87 Difference]: Start difference. First operand 195 states and 239 transitions. Second operand 13 states. [2020-08-22 04:28:50,612 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:28:51,286 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2020-08-22 04:28:52,090 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-08-22 04:28:53,245 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:28:53,624 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-22 04:28:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:57,518 INFO L93 Difference]: Finished difference Result 633 states and 818 transitions. [2020-08-22 04:28:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 04:28:57,518 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-08-22 04:28:57,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:57,528 INFO L225 Difference]: With dead ends: 633 [2020-08-22 04:28:57,528 INFO L226 Difference]: Without dead ends: 483 [2020-08-22 04:28:57,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-08-22 04:28:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-22 04:28:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 386. [2020-08-22 04:28:57,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-22 04:28:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 486 transitions. [2020-08-22 04:28:57,685 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 486 transitions. Word has length 89 [2020-08-22 04:28:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:57,685 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 486 transitions. [2020-08-22 04:28:57,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 04:28:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 486 transitions. [2020-08-22 04:28:57,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-22 04:28:57,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:57,692 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:57,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:28:57,692 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:57,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:57,693 INFO L82 PathProgramCache]: Analyzing trace with hash -678987685, now seen corresponding path program 1 times [2020-08-22 04:28:57,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:57,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932612783] [2020-08-22 04:28:57,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,049 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:28:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:28:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:28:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:28:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:28:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:28:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:28:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 04:28:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 04:28:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:28:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:28:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:28:58,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932612783] [2020-08-22 04:28:58,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:58,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 04:28:58,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680911331] [2020-08-22 04:28:58,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:28:58,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:58,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:28:58,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:28:58,249 INFO L87 Difference]: Start difference. First operand 386 states and 486 transitions. Second operand 11 states. [2020-08-22 04:28:58,916 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:29:00,638 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-22 04:29:01,149 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-22 04:29:01,431 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:29:01,785 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-22 04:29:04,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:04,913 INFO L93 Difference]: Finished difference Result 1239 states and 1662 transitions. [2020-08-22 04:29:04,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 04:29:04,914 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-08-22 04:29:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:04,922 INFO L225 Difference]: With dead ends: 1239 [2020-08-22 04:29:04,922 INFO L226 Difference]: Without dead ends: 898 [2020-08-22 04:29:04,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812 [2020-08-22 04:29:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-08-22 04:29:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 703. [2020-08-22 04:29:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-22 04:29:05,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 890 transitions. [2020-08-22 04:29:05,154 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 890 transitions. Word has length 95 [2020-08-22 04:29:05,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:05,155 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 890 transitions. [2020-08-22 04:29:05,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:29:05,155 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 890 transitions. [2020-08-22 04:29:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 04:29:05,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:05,160 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:05,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:29:05,161 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:05,161 INFO L82 PathProgramCache]: Analyzing trace with hash -319049537, now seen corresponding path program 1 times [2020-08-22 04:29:05,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:05,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793472155] [2020-08-22 04:29:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,507 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:29:05,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:29:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:29:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:29:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:29:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:29:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 04:29:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 04:29:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:29:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 04:29:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 04:29:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:29:05,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793472155] [2020-08-22 04:29:05,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:05,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:29:05,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363086638] [2020-08-22 04:29:05,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:29:05,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:05,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:29:05,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:29:05,683 INFO L87 Difference]: Start difference. First operand 703 states and 890 transitions. Second operand 12 states. [2020-08-22 04:29:06,361 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:29:08,319 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-22 04:29:08,655 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-22 04:29:09,020 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-22 04:29:10,220 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:29:13,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:13,025 INFO L93 Difference]: Finished difference Result 1988 states and 2808 transitions. [2020-08-22 04:29:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 04:29:13,025 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-08-22 04:29:13,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:13,038 INFO L225 Difference]: With dead ends: 1988 [2020-08-22 04:29:13,038 INFO L226 Difference]: Without dead ends: 1330 [2020-08-22 04:29:13,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 04:29:13,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2020-08-22 04:29:13,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1102. [2020-08-22 04:29:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-22 04:29:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1421 transitions. [2020-08-22 04:29:13,268 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1421 transitions. Word has length 99 [2020-08-22 04:29:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:13,268 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1421 transitions. [2020-08-22 04:29:13,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:29:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1421 transitions. [2020-08-22 04:29:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 04:29:13,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:13,274 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:13,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:29:13,274 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:13,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1144263416, now seen corresponding path program 1 times [2020-08-22 04:29:13,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:13,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502076248] [2020-08-22 04:29:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,632 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:29:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:29:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:29:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:29:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:29:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:29:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 04:29:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 04:29:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 04:29:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 04:29:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 04:29:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:29:13,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502076248] [2020-08-22 04:29:13,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:13,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:29:13,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001518223] [2020-08-22 04:29:13,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:29:13,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:13,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:29:13,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:29:13,988 INFO L87 Difference]: Start difference. First operand 1102 states and 1421 transitions. Second operand 12 states. [2020-08-22 04:29:16,397 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-22 04:29:16,727 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-22 04:29:17,046 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-22 04:29:17,398 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-22 04:29:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:19,513 INFO L93 Difference]: Finished difference Result 2481 states and 3557 transitions. [2020-08-22 04:29:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:29:19,514 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-08-22 04:29:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:19,524 INFO L225 Difference]: With dead ends: 2481 [2020-08-22 04:29:19,525 INFO L226 Difference]: Without dead ends: 1424 [2020-08-22 04:29:19,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2020-08-22 04:29:19,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-08-22 04:29:19,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1128. [2020-08-22 04:29:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-08-22 04:29:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1449 transitions. [2020-08-22 04:29:19,910 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1449 transitions. Word has length 132 [2020-08-22 04:29:19,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:19,911 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 1449 transitions. [2020-08-22 04:29:19,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:29:19,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1449 transitions. [2020-08-22 04:29:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 04:29:19,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:19,917 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:19,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:29:19,917 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:19,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1305336714, now seen corresponding path program 1 times [2020-08-22 04:29:19,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:19,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116947779] [2020-08-22 04:29:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,276 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:29:20,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:29:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:29:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:29:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:29:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:29:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 04:29:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 04:29:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 04:29:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 04:29:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 04:29:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:29:20,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116947779] [2020-08-22 04:29:20,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:20,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 04:29:20,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933361888] [2020-08-22 04:29:20,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 04:29:20,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:20,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 04:29:20,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:29:20,589 INFO L87 Difference]: Start difference. First operand 1128 states and 1449 transitions. Second operand 15 states. [2020-08-22 04:29:21,743 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:29:22,312 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-22 04:29:23,741 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-22 04:29:24,115 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-22 04:29:24,464 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-22 04:29:26,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:26,723 INFO L93 Difference]: Finished difference Result 2527 states and 3605 transitions. [2020-08-22 04:29:26,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 04:29:26,723 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 132 [2020-08-22 04:29:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:26,733 INFO L225 Difference]: With dead ends: 2527 [2020-08-22 04:29:26,733 INFO L226 Difference]: Without dead ends: 1444 [2020-08-22 04:29:26,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2020-08-22 04:29:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-08-22 04:29:26,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1144. [2020-08-22 04:29:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2020-08-22 04:29:26,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1465 transitions. [2020-08-22 04:29:26,968 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1465 transitions. Word has length 132 [2020-08-22 04:29:26,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:26,968 INFO L479 AbstractCegarLoop]: Abstraction has 1144 states and 1465 transitions. [2020-08-22 04:29:26,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 04:29:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1465 transitions. [2020-08-22 04:29:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 04:29:26,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:26,973 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:26,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:29:26,973 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:26,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:26,974 INFO L82 PathProgramCache]: Analyzing trace with hash 856640075, now seen corresponding path program 1 times [2020-08-22 04:29:26,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:26,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386620519] [2020-08-22 04:29:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,367 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:29:27,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:29:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:29:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:29:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:29:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:29:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 04:29:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 04:29:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 04:29:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 04:29:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 04:29:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:29:27,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386620519] [2020-08-22 04:29:27,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:27,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:29:27,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977964461] [2020-08-22 04:29:27,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:29:27,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:27,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:29:27,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:29:27,726 INFO L87 Difference]: Start difference. First operand 1144 states and 1465 transitions. Second operand 10 states. [2020-08-22 04:29:28,479 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:29:29,415 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:29:34,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:34,271 INFO L93 Difference]: Finished difference Result 3668 states and 5255 transitions. [2020-08-22 04:29:34,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 04:29:34,272 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-22 04:29:34,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:34,288 INFO L225 Difference]: With dead ends: 3668 [2020-08-22 04:29:34,288 INFO L226 Difference]: Without dead ends: 2569 [2020-08-22 04:29:34,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2020-08-22 04:29:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2020-08-22 04:29:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2160. [2020-08-22 04:29:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2020-08-22 04:29:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2823 transitions. [2020-08-22 04:29:34,962 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2823 transitions. Word has length 132 [2020-08-22 04:29:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:34,963 INFO L479 AbstractCegarLoop]: Abstraction has 2160 states and 2823 transitions. [2020-08-22 04:29:34,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:29:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2823 transitions. [2020-08-22 04:29:34,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 04:29:34,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:34,969 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:34,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:29:34,969 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:34,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2033559269, now seen corresponding path program 1 times [2020-08-22 04:29:34,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:34,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043145239] [2020-08-22 04:29:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,344 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:29:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:29:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:29:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:29:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:29:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:29:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 04:29:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 04:29:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 04:29:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:29:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 04:29:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 04:29:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:29:35,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043145239] [2020-08-22 04:29:35,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:35,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:29:35,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965448376] [2020-08-22 04:29:35,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:29:35,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:35,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:29:35,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:29:35,519 INFO L87 Difference]: Start difference. First operand 2160 states and 2823 transitions. Second operand 10 states. [2020-08-22 04:29:36,445 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 213