/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_spec5_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:27:34,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:27:34,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:27:34,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:27:34,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:27:34,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:27:34,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:27:34,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:27:34,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:27:34,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:27:34,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:27:34,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:27:34,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:27:34,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:27:34,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:27:34,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:27:34,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:27:34,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:27:34,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:27:34,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:27:34,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:27:34,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:27:34,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:27:34,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:27:34,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:27:34,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:27:34,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:27:34,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:27:34,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:27:34,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:27:34,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:27:34,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:27:34,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:27:34,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:27:34,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:27:34,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:27:34,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:27:34,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:27:34,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:27:34,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:27:34,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:27:34,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:27:34,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:27:34,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:27:34,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:27:34,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:27:34,791 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:27:34,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:27:34,791 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:27:34,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:27:34,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:27:34,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:27:34,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:27:34,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:27:34,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:27:34,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:27:34,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:27:34,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:27:34,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:27:34,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:27:34,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:27:34,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:27:34,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:27:34,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:27:34,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:27:34,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:27:34,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:27:34,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:27:34,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:27:34,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:27:34,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:27:34,796 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:27:35,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:27:35,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:27:35,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:27:35,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:27:35,097 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:27:35,098 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2020-08-21 16:27:35,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e62b76326/4a564ea9e2884517969dd173f7862728/FLAG54a655601 [2020-08-21 16:27:35,655 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:27:35,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2020-08-21 16:27:35,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e62b76326/4a564ea9e2884517969dd173f7862728/FLAG54a655601 [2020-08-21 16:27:35,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e62b76326/4a564ea9e2884517969dd173f7862728 [2020-08-21 16:27:35,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:27:35,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:27:35,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:27:35,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:27:35,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:27:35,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:27:35" (1/1) ... [2020-08-21 16:27:35,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56730f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:35, skipping insertion in model container [2020-08-21 16:27:35,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:27:35" (1/1) ... [2020-08-21 16:27:35,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:27:36,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:27:36,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:27:36,489 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:27:36,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:27:36,608 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:27:36,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:36 WrapperNode [2020-08-21 16:27:36,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:27:36,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:27:36,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:27:36,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:27:36,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:36" (1/1) ... [2020-08-21 16:27:36,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:36" (1/1) ... [2020-08-21 16:27:36,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:36" (1/1) ... [2020-08-21 16:27:36,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:36" (1/1) ... [2020-08-21 16:27:36,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:36" (1/1) ... [2020-08-21 16:27:36,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:36" (1/1) ... [2020-08-21 16:27:36,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:36" (1/1) ... [2020-08-21 16:27:36,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:27:36,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:27:36,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:27:36,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:27:36,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:27:36,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:27:36,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:27:36,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:27:36,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 16:27:36,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 16:27:36,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 16:27:36,804 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:27:36,804 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:27:36,804 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:27:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:27:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:27:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:27:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:27:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 16:27:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:27:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:27:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:27:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:27:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:27:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:27:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:27:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:27:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:27:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 16:27:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:27:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:27:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:27:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:27:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:27:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:27:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:27:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 16:27:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 16:27:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:27:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:27:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:27:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:27:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:27:36,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:27:36,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:27:36,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:27:36,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:27:36,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:27:36,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:27:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:27:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:27:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:27:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:27:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:27:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:27:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 16:27:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 16:27:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 16:27:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:27:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:27:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:27:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:27:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:27:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:27:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 16:27:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:27:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:27:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:27:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:27:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:27:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:27:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:27:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:27:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:27:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:27:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:27:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:27:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:27:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:27:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 16:27:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:27:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:27:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:27:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:27:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 16:27:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 16:27:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:27:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:27:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:27:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:27:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:27:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:27:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:27:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:27:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:27:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:27:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:27:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:27:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:27:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:27:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:27:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:27:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:27:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:27:36,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:27:36,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:27:36,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:27:37,872 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:27:37,872 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:27:37,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:27:37 BoogieIcfgContainer [2020-08-21 16:27:37,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:27:37,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:27:37,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:27:37,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:27:37,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:27:35" (1/3) ... [2020-08-21 16:27:37,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef7e96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:27:37, skipping insertion in model container [2020-08-21 16:27:37,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:36" (2/3) ... [2020-08-21 16:27:37,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef7e96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:27:37, skipping insertion in model container [2020-08-21 16:27:37,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:27:37" (3/3) ... [2020-08-21 16:27:37,886 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2020-08-21 16:27:37,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:27:37,905 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:27:37,918 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:27:37,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:27:37,942 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:27:37,942 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:27:37,942 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:27:37,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:27:37,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:27:37,943 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:27:37,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:27:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2020-08-21 16:27:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 16:27:37,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:37,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:37,978 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:37,984 INFO L82 PathProgramCache]: Analyzing trace with hash -404445524, now seen corresponding path program 1 times [2020-08-21 16:27:37,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:37,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036427268] [2020-08-21 16:27:37,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,622 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:27:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:27:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:27:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:38,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036427268] [2020-08-21 16:27:38,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:38,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:27:38,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824082791] [2020-08-21 16:27:38,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:27:38,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:38,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:27:38,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:27:38,780 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 4 states. [2020-08-21 16:27:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:39,968 INFO L93 Difference]: Finished difference Result 351 states and 448 transitions. [2020-08-21 16:27:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:27:39,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 16:27:39,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:39,985 INFO L225 Difference]: With dead ends: 351 [2020-08-21 16:27:39,986 INFO L226 Difference]: Without dead ends: 192 [2020-08-21 16:27:39,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:27:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-08-21 16:27:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 160. [2020-08-21 16:27:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-21 16:27:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 188 transitions. [2020-08-21 16:27:40,090 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 188 transitions. Word has length 59 [2020-08-21 16:27:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:40,091 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 188 transitions. [2020-08-21 16:27:40,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:27:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 188 transitions. [2020-08-21 16:27:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 16:27:40,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:40,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:40,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:27:40,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:40,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:40,096 INFO L82 PathProgramCache]: Analyzing trace with hash -315023676, now seen corresponding path program 1 times [2020-08-21 16:27:40,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:40,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223787361] [2020-08-21 16:27:40,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,398 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:40,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:27:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:27:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 16:27:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:40,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223787361] [2020-08-21 16:27:40,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:40,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:27:40,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588218980] [2020-08-21 16:27:40,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:27:40,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:40,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:27:40,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:27:40,456 INFO L87 Difference]: Start difference. First operand 160 states and 188 transitions. Second operand 5 states. [2020-08-21 16:27:40,934 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:41,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:41,868 INFO L93 Difference]: Finished difference Result 292 states and 356 transitions. [2020-08-21 16:27:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:27:41,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 16:27:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:41,877 INFO L225 Difference]: With dead ends: 292 [2020-08-21 16:27:41,877 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 16:27:41,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:27:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 16:27:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 151. [2020-08-21 16:27:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-08-21 16:27:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 176 transitions. [2020-08-21 16:27:41,920 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 176 transitions. Word has length 60 [2020-08-21 16:27:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:41,920 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 176 transitions. [2020-08-21 16:27:41,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:27:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 176 transitions. [2020-08-21 16:27:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 16:27:41,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:41,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:41,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:27:41,923 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:41,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:41,924 INFO L82 PathProgramCache]: Analyzing trace with hash 649722396, now seen corresponding path program 1 times [2020-08-21 16:27:41,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:41,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633208496] [2020-08-21 16:27:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,224 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:27:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:27:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:42,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633208496] [2020-08-21 16:27:42,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:42,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:27:42,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180043444] [2020-08-21 16:27:42,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:27:42,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:42,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:27:42,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:27:42,363 INFO L87 Difference]: Start difference. First operand 151 states and 176 transitions. Second operand 9 states. [2020-08-21 16:27:42,726 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:43,020 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:43,274 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:43,496 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:44,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:44,898 INFO L93 Difference]: Finished difference Result 305 states and 375 transitions. [2020-08-21 16:27:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:27:44,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 16:27:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:44,903 INFO L225 Difference]: With dead ends: 305 [2020-08-21 16:27:44,903 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 16:27:44,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:27:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 16:27:44,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 151. [2020-08-21 16:27:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-08-21 16:27:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 175 transitions. [2020-08-21 16:27:44,945 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 175 transitions. Word has length 65 [2020-08-21 16:27:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:44,945 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 175 transitions. [2020-08-21 16:27:44,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:27:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 175 transitions. [2020-08-21 16:27:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 16:27:44,948 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:44,948 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:44,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:27:44,949 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:44,949 INFO L82 PathProgramCache]: Analyzing trace with hash 2071838844, now seen corresponding path program 1 times [2020-08-21 16:27:44,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:44,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741214643] [2020-08-21 16:27:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,251 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:45,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:27:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 16:27:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 16:27:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:45,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741214643] [2020-08-21 16:27:45,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:45,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:27:45,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359346433] [2020-08-21 16:27:45,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:27:45,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:45,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:27:45,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:27:45,415 INFO L87 Difference]: Start difference. First operand 151 states and 175 transitions. Second operand 7 states. [2020-08-21 16:27:45,730 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:47,096 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:47,646 INFO L93 Difference]: Finished difference Result 415 states and 516 transitions. [2020-08-21 16:27:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:27:47,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-21 16:27:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:47,650 INFO L225 Difference]: With dead ends: 415 [2020-08-21 16:27:47,650 INFO L226 Difference]: Without dead ends: 292 [2020-08-21 16:27:47,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:27:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-21 16:27:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 246. [2020-08-21 16:27:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-21 16:27:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 280 transitions. [2020-08-21 16:27:47,705 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 280 transitions. Word has length 83 [2020-08-21 16:27:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:47,705 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 280 transitions. [2020-08-21 16:27:47,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:27:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 280 transitions. [2020-08-21 16:27:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 16:27:47,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:47,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:47,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:27:47,708 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:47,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:47,708 INFO L82 PathProgramCache]: Analyzing trace with hash 477615551, now seen corresponding path program 1 times [2020-08-21 16:27:47,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:47,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214936610] [2020-08-21 16:27:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,054 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:27:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:27:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 16:27:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 16:27:48,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214936610] [2020-08-21 16:27:48,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:48,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:27:48,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978834175] [2020-08-21 16:27:48,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:27:48,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:48,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:27:48,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:27:48,218 INFO L87 Difference]: Start difference. First operand 246 states and 280 transitions. Second operand 9 states. [2020-08-21 16:27:48,559 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:49,179 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:49,892 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:50,178 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:50,589 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:50,815 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:51,421 INFO L93 Difference]: Finished difference Result 509 states and 612 transitions. [2020-08-21 16:27:51,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:27:51,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-21 16:27:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:51,425 INFO L225 Difference]: With dead ends: 509 [2020-08-21 16:27:51,426 INFO L226 Difference]: Without dead ends: 291 [2020-08-21 16:27:51,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:27:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-08-21 16:27:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 245. [2020-08-21 16:27:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-08-21 16:27:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 277 transitions. [2020-08-21 16:27:51,477 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 277 transitions. Word has length 97 [2020-08-21 16:27:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:51,478 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 277 transitions. [2020-08-21 16:27:51,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:27:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 277 transitions. [2020-08-21 16:27:51,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 16:27:51,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:51,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:51,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:27:51,480 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:51,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:51,481 INFO L82 PathProgramCache]: Analyzing trace with hash 115684108, now seen corresponding path program 1 times [2020-08-21 16:27:51,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:51,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761896046] [2020-08-21 16:27:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,729 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:27:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 16:27:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:27:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:51,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761896046] [2020-08-21 16:27:51,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:51,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:27:51,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438096186] [2020-08-21 16:27:51,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:27:51,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:51,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:27:51,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:27:51,910 INFO L87 Difference]: Start difference. First operand 245 states and 277 transitions. Second operand 9 states. [2020-08-21 16:27:52,840 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:53,078 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:27:53,318 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:53,556 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:54,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:54,394 INFO L93 Difference]: Finished difference Result 507 states and 607 transitions. [2020-08-21 16:27:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:27:54,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-21 16:27:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:54,397 INFO L225 Difference]: With dead ends: 507 [2020-08-21 16:27:54,397 INFO L226 Difference]: Without dead ends: 290 [2020-08-21 16:27:54,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:27:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-08-21 16:27:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 250. [2020-08-21 16:27:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-21 16:27:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 282 transitions. [2020-08-21 16:27:54,445 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 282 transitions. Word has length 98 [2020-08-21 16:27:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:54,445 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 282 transitions. [2020-08-21 16:27:54,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:27:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 282 transitions. [2020-08-21 16:27:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 16:27:54,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:54,447 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:54,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:27:54,448 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:54,448 INFO L82 PathProgramCache]: Analyzing trace with hash 43297550, now seen corresponding path program 1 times [2020-08-21 16:27:54,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:54,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225391619] [2020-08-21 16:27:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,698 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:27:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 16:27:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:27:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:54,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225391619] [2020-08-21 16:27:54,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:54,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 16:27:54,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571830407] [2020-08-21 16:27:54,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:27:54,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:54,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:27:54,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:27:54,852 INFO L87 Difference]: Start difference. First operand 250 states and 282 transitions. Second operand 11 states. [2020-08-21 16:27:55,339 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:55,572 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:55,791 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:56,503 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:56,742 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:56,970 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:57,940 INFO L93 Difference]: Finished difference Result 519 states and 628 transitions. [2020-08-21 16:27:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:27:57,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-21 16:27:57,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:57,943 INFO L225 Difference]: With dead ends: 519 [2020-08-21 16:27:57,943 INFO L226 Difference]: Without dead ends: 297 [2020-08-21 16:27:57,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:27:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-08-21 16:27:57,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 254. [2020-08-21 16:27:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-21 16:27:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 286 transitions. [2020-08-21 16:27:57,990 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 286 transitions. Word has length 98 [2020-08-21 16:27:57,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:57,991 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 286 transitions. [2020-08-21 16:27:57,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:27:57,991 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 286 transitions. [2020-08-21 16:27:57,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 16:27:57,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:57,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:57,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:27:57,993 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:57,993 INFO L82 PathProgramCache]: Analyzing trace with hash 373063311, now seen corresponding path program 1 times [2020-08-21 16:27:57,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:57,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575985058] [2020-08-21 16:27:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,325 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:58,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:27:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 16:27:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:27:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:58,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575985058] [2020-08-21 16:27:58,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:58,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:27:58,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603824115] [2020-08-21 16:27:58,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:27:58,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:58,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:27:58,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:27:58,500 INFO L87 Difference]: Start difference. First operand 254 states and 286 transitions. Second operand 7 states. [2020-08-21 16:27:58,974 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:59,463 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:01,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:01,423 INFO L93 Difference]: Finished difference Result 711 states and 879 transitions. [2020-08-21 16:28:01,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:28:01,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-21 16:28:01,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:01,428 INFO L225 Difference]: With dead ends: 711 [2020-08-21 16:28:01,428 INFO L226 Difference]: Without dead ends: 485 [2020-08-21 16:28:01,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:28:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-21 16:28:01,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 443. [2020-08-21 16:28:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-21 16:28:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 514 transitions. [2020-08-21 16:28:01,511 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 514 transitions. Word has length 98 [2020-08-21 16:28:01,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:01,512 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 514 transitions. [2020-08-21 16:28:01,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:28:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 514 transitions. [2020-08-21 16:28:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 16:28:01,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:01,514 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:01,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:28:01,514 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:01,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:01,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1661296137, now seen corresponding path program 1 times [2020-08-21 16:28:01,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:01,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22199917] [2020-08-21 16:28:01,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,876 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:01,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:28:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:28:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 16:28:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:01,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 16:28:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:02,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:28:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:28:02,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22199917] [2020-08-21 16:28:02,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:28:02,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:28:02,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641656544] [2020-08-21 16:28:02,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:28:02,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:02,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:28:02,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:28:02,027 INFO L87 Difference]: Start difference. First operand 443 states and 514 transitions. Second operand 12 states. [2020-08-21 16:28:02,415 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:03,041 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:04,157 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:04,439 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:04,671 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:04,924 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:05,175 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:06,484 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:06,737 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:07,712 INFO L93 Difference]: Finished difference Result 1230 states and 1515 transitions. [2020-08-21 16:28:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 16:28:07,715 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-08-21 16:28:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:07,721 INFO L225 Difference]: With dead ends: 1230 [2020-08-21 16:28:07,721 INFO L226 Difference]: Without dead ends: 894 [2020-08-21 16:28:07,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 16:28:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-08-21 16:28:07,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 769. [2020-08-21 16:28:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-08-21 16:28:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 883 transitions. [2020-08-21 16:28:07,853 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 883 transitions. Word has length 102 [2020-08-21 16:28:07,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:07,853 INFO L479 AbstractCegarLoop]: Abstraction has 769 states and 883 transitions. [2020-08-21 16:28:07,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:28:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 883 transitions. [2020-08-21 16:28:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-08-21 16:28:07,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:07,857 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:07,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:28:07,858 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:07,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:07,858 INFO L82 PathProgramCache]: Analyzing trace with hash -577396182, now seen corresponding path program 1 times [2020-08-21 16:28:07,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:07,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811030376] [2020-08-21 16:28:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,234 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:08,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:28:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:28:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:28:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:28:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 16:28:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 16:28:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 16:28:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:28:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-21 16:28:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-21 16:28:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 16:28:08,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811030376] [2020-08-21 16:28:08,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:28:08,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 16:28:08,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081362390] [2020-08-21 16:28:08,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:28:08,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:08,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:28:08,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:28:08,608 INFO L87 Difference]: Start difference. First operand 769 states and 883 transitions. Second operand 16 states. [2020-08-21 16:28:09,284 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:28:09,632 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 16:28:09,892 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 16:28:10,144 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 16:28:10,786 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 16:28:11,056 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:28:11,453 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-21 16:28:12,149 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:12,496 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 16:28:13,479 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 16:28:13,756 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 16:28:14,209 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 16:28:14,493 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:15,035 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:15,451 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 16:28:16,088 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 16:28:16,574 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-21 16:28:17,227 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 16:28:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:17,817 INFO L93 Difference]: Finished difference Result 1676 states and 1980 transitions. [2020-08-21 16:28:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-21 16:28:17,817 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2020-08-21 16:28:17,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:17,823 INFO L225 Difference]: With dead ends: 1676 [2020-08-21 16:28:17,823 INFO L226 Difference]: Without dead ends: 1010 [2020-08-21 16:28:17,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-21 16:28:17,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-08-21 16:28:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 917. [2020-08-21 16:28:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-08-21 16:28:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1061 transitions. [2020-08-21 16:28:17,998 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1061 transitions. Word has length 180 [2020-08-21 16:28:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:17,999 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 1061 transitions. [2020-08-21 16:28:17,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 16:28:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1061 transitions. [2020-08-21 16:28:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-08-21 16:28:18,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:18,006 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:18,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:28:18,006 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:18,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1633838389, now seen corresponding path program 1 times [2020-08-21 16:28:18,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:18,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015025298] [2020-08-21 16:28:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,356 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:18,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:28:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:28:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:28:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:28:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 16:28:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:28:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:28:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:28:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 16:28:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:28:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:28:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 16:28:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-21 16:28:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-21 16:28:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-21 16:28:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-21 16:28:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-08-21 16:28:18,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015025298] [2020-08-21 16:28:18,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:28:18,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 16:28:18,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041629257] [2020-08-21 16:28:18,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 16:28:18,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:18,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 16:28:18,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:28:18,960 INFO L87 Difference]: Start difference. First operand 917 states and 1061 transitions. Second operand 15 states. [2020-08-21 16:28:20,460 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:20,710 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:20,954 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:21,182 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:22,630 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:23,339 INFO L93 Difference]: Finished difference Result 2399 states and 2887 transitions. [2020-08-21 16:28:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 16:28:23,343 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 305 [2020-08-21 16:28:23,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:23,352 INFO L225 Difference]: With dead ends: 2399 [2020-08-21 16:28:23,352 INFO L226 Difference]: Without dead ends: 1409 [2020-08-21 16:28:23,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 16:28:23,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2020-08-21 16:28:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1197. [2020-08-21 16:28:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-21 16:28:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1415 transitions. [2020-08-21 16:28:23,592 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1415 transitions. Word has length 305 [2020-08-21 16:28:23,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:23,592 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1415 transitions. [2020-08-21 16:28:23,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 16:28:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1415 transitions. [2020-08-21 16:28:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-21 16:28:23,599 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:23,599 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:23,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:28:23,599 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:23,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1189478218, now seen corresponding path program 1 times [2020-08-21 16:28:23,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:23,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998168559] [2020-08-21 16:28:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:23,909 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:23,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:23,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:23,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:28:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:23,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:28:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:23,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:23,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:28:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:28:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 16:28:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:28:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:28:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:28:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:28:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-21 16:28:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:28:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:28:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 16:28:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-21 16:28:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-21 16:28:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 16:28:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 90 proven. 42 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-08-21 16:28:24,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998168559] [2020-08-21 16:28:24,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:28:24,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 16:28:24,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017942246] [2020-08-21 16:28:24,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:28:24,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:24,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:28:24,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:28:24,337 INFO L87 Difference]: Start difference. First operand 1197 states and 1415 transitions. Second operand 16 states. [2020-08-21 16:28:25,137 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:25,578 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:25,822 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:26,050 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:26,696 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:27,499 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:27,836 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:28,081 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:28,662 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:29,620 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:29,865 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:30,361 INFO L93 Difference]: Finished difference Result 2270 states and 2722 transitions. [2020-08-21 16:28:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 16:28:30,361 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 307 [2020-08-21 16:28:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:30,371 INFO L225 Difference]: With dead ends: 2270 [2020-08-21 16:28:30,371 INFO L226 Difference]: Without dead ends: 1199 [2020-08-21 16:28:30,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 16:28:30,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-21 16:28:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1149. [2020-08-21 16:28:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2020-08-21 16:28:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1341 transitions. [2020-08-21 16:28:30,657 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1341 transitions. Word has length 307 [2020-08-21 16:28:30,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:30,658 INFO L479 AbstractCegarLoop]: Abstraction has 1149 states and 1341 transitions. [2020-08-21 16:28:30,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 16:28:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1341 transitions. [2020-08-21 16:28:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-21 16:28:30,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:30,666 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:30,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:28:30,666 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:30,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:30,667 INFO L82 PathProgramCache]: Analyzing trace with hash 491352727, now seen corresponding path program 1 times [2020-08-21 16:28:30,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:30,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063812260] [2020-08-21 16:28:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,969 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:30,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:28:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:28:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:28:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:28:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 16:28:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:28:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:28:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:28:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:28:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 16:28:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:28:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:28:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-08-21 16:28:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-21 16:28:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 16:28:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 16:28:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 71 proven. 11 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-08-21 16:28:31,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063812260] [2020-08-21 16:28:31,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:28:31,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 16:28:31,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757851833] [2020-08-21 16:28:31,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:28:31,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:31,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:28:31,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:28:31,478 INFO L87 Difference]: Start difference. First operand 1149 states and 1341 transitions. Second operand 16 states. [2020-08-21 16:28:31,923 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:32,667 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190