/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:16:53,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:16:53,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:16:53,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:16:53,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:16:53,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:16:53,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:16:53,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:16:53,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:16:53,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:16:53,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:16:53,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:16:53,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:16:53,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:16:53,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:16:53,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:16:53,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:16:53,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:16:53,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:16:53,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:16:53,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:16:53,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:16:53,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:16:53,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:16:53,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:16:53,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:16:53,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:16:53,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:16:53,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:16:53,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:16:53,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:16:53,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:16:53,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:16:53,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:16:53,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:16:53,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:16:53,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:16:53,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:16:53,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:16:53,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:16:53,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:16:53,549 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 21:16:53,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:16:53,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:16:53,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:16:53,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:16:53,593 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:16:53,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:16:53,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:16:53,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:16:53,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:16:53,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:16:53,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:16:53,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:16:53,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:16:53,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:16:53,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:16:53,595 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:16:53,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:16:53,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:16:53,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:16:53,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:16:53,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:16:53,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:16:53,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:16:53,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:16:53,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:16:53,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:16:53,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:16:53,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:16:53,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:16:53,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:16:53,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:16:53,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:16:53,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:16:53,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:16:53,940 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:16:53,941 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2020-08-21 21:16:53,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d3dc030d/7d3d2205cf974970a158aeafb7ecde6a/FLAGd4277ee3b [2020-08-21 21:16:54,468 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:16:54,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2020-08-21 21:16:54,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d3dc030d/7d3d2205cf974970a158aeafb7ecde6a/FLAGd4277ee3b [2020-08-21 21:16:54,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d3dc030d/7d3d2205cf974970a158aeafb7ecde6a [2020-08-21 21:16:54,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:16:54,761 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:16:54,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:16:54,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:16:54,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:16:54,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:16:54" (1/1) ... [2020-08-21 21:16:54,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19fb1f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:54, skipping insertion in model container [2020-08-21 21:16:54,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:16:54" (1/1) ... [2020-08-21 21:16:54,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:16:54,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:16:55,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:16:55,171 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:16:55,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:16:55,436 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:16:55,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:55 WrapperNode [2020-08-21 21:16:55,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:16:55,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:16:55,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:16:55,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:16:55,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:55" (1/1) ... [2020-08-21 21:16:55,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:55" (1/1) ... [2020-08-21 21:16:55,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:55" (1/1) ... [2020-08-21 21:16:55,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:55" (1/1) ... [2020-08-21 21:16:55,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:55" (1/1) ... [2020-08-21 21:16:55,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:55" (1/1) ... [2020-08-21 21:16:55,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:55" (1/1) ... [2020-08-21 21:16:55,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:16:55,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:16:55,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:16:55,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:16:55,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:55" (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 21:16:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:16:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:16:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:16:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 21:16:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 21:16:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 21:16:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:16:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:16:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:16:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:16:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:16:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:16:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:16:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:16:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:16:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:16:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:16:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:16:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:16:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:16:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:16:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:16:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:16:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:16:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:16:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:16:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:16:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:16:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:16:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:16:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:16:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 21:16:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:16:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 21:16:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:16:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:16:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:16:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:16:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:16:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:16:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 21:16:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:16:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:16:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:16:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:16:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:16:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:16:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:16:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 21:16:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 21:16:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 21:16:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:16:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:16:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:16:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:16:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:16:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:16:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:16:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:16:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:16:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:16:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:16:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:16:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:16:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:16:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:16:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:16:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:16:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:16:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:16:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:16:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:16:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:16:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:16:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:16:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:16:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:16:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:16:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:16:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:16:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:16:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:16:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:16:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:16:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:16:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:16:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:16:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:16:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 21:16:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:16:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:16:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:16:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 21:16:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:16:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 21:16:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:16:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:16:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:16:56,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:16:56,609 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:16:56,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:16:56 BoogieIcfgContainer [2020-08-21 21:16:56,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:16:56,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:16:56,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:16:56,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:16:56,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:16:54" (1/3) ... [2020-08-21 21:16:56,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11759d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:16:56, skipping insertion in model container [2020-08-21 21:16:56,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:16:55" (2/3) ... [2020-08-21 21:16:56,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11759d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:16:56, skipping insertion in model container [2020-08-21 21:16:56,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:16:56" (3/3) ... [2020-08-21 21:16:56,622 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product46.cil.c [2020-08-21 21:16:56,632 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:16:56,640 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:16:56,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:16:56,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:16:56,678 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:16:56,678 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:16:56,678 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:16:56,678 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:16:56,679 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:16:56,679 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:16:56,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:16:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-21 21:16:56,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 21:16:56,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:16:56,712 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 21:16:56,712 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:16:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:16:56,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1347369271, now seen corresponding path program 1 times [2020-08-21 21:16:56,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:16:56,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550294881] [2020-08-21 21:16:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:16:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,347 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:16:57,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:16:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:16:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:16:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:16:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:16:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:16:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:16:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:16:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:16:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:16:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:57,460 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 21:16:57,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550294881] [2020-08-21 21:16:57,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:16:57,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:16:57,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182037048] [2020-08-21 21:16:57,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:16:57,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:16:57,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:16:57,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:16:57,486 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 4 states. [2020-08-21 21:16:58,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:16:58,429 INFO L93 Difference]: Finished difference Result 325 states and 415 transitions. [2020-08-21 21:16:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:16:58,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 21:16:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:16:58,445 INFO L225 Difference]: With dead ends: 325 [2020-08-21 21:16:58,446 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 21:16:58,450 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 21:16:58,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 21:16:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 147. [2020-08-21 21:16:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-21 21:16:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2020-08-21 21:16:58,546 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 59 [2020-08-21 21:16:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:16:58,547 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2020-08-21 21:16:58,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:16:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2020-08-21 21:16:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 21:16:58,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:16:58,551 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 21:16:58,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:16:58,552 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:16:58,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:16:58,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1814034675, now seen corresponding path program 1 times [2020-08-21 21:16:58,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:16:58,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650891091] [2020-08-21 21:16:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:16:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,909 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:16:58,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:16:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:16:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:16:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:16:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:16:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:16:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:16:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:16:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:16:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 21:16:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:16:58,982 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 21:16:58,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650891091] [2020-08-21 21:16:58,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:16:58,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:16:58,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389636505] [2020-08-21 21:16:58,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:16:58,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:16:58,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:16:58,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:16:58,987 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand 5 states. [2020-08-21 21:16:59,421 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:00,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:00,345 INFO L93 Difference]: Finished difference Result 266 states and 323 transitions. [2020-08-21 21:17:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:17:00,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 21:17:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:00,351 INFO L225 Difference]: With dead ends: 266 [2020-08-21 21:17:00,352 INFO L226 Difference]: Without dead ends: 169 [2020-08-21 21:17:00,353 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 21:17:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-21 21:17:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2020-08-21 21:17:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 21:17:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2020-08-21 21:17:00,394 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 60 [2020-08-21 21:17:00,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:00,394 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2020-08-21 21:17:00,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:17:00,394 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2020-08-21 21:17:00,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 21:17:00,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:00,397 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 21:17:00,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:17:00,398 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:00,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1518926539, now seen corresponding path program 1 times [2020-08-21 21:17:00,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:00,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26313866] [2020-08-21 21:17:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,774 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:00,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:17:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:17:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 21:17:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:00,871 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 21:17:00,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26313866] [2020-08-21 21:17:00,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:00,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:17:00,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212123901] [2020-08-21 21:17:00,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:17:00,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:00,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:17:00,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:17:00,873 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand 9 states. [2020-08-21 21:17:01,214 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:01,522 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:01,736 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:01,965 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:03,095 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-21 21:17:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:17:03,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 21:17:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:03,098 INFO L225 Difference]: With dead ends: 279 [2020-08-21 21:17:03,098 INFO L226 Difference]: Without dead ends: 169 [2020-08-21 21:17:03,099 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 21:17:03,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-21 21:17:03,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2020-08-21 21:17:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 21:17:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 159 transitions. [2020-08-21 21:17:03,156 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 159 transitions. Word has length 65 [2020-08-21 21:17:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:03,159 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 159 transitions. [2020-08-21 21:17:03,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:17:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 159 transitions. [2020-08-21 21:17:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 21:17:03,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:03,170 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] [2020-08-21 21:17:03,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:17:03,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:03,171 INFO L82 PathProgramCache]: Analyzing trace with hash 793046871, now seen corresponding path program 1 times [2020-08-21 21:17:03,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:03,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850763975] [2020-08-21 21:17:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,524 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:17:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 21:17:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 21:17:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 21:17:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:03,606 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 21:17:03,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850763975] [2020-08-21 21:17:03,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:03,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:17:03,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250845067] [2020-08-21 21:17:03,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:17:03,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:03,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:17:03,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:17:03,608 INFO L87 Difference]: Start difference. First operand 138 states and 159 transitions. Second operand 7 states. [2020-08-21 21:17:03,914 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:05,404 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:05,931 INFO L93 Difference]: Finished difference Result 391 states and 483 transitions. [2020-08-21 21:17:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:17:05,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-21 21:17:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:05,938 INFO L225 Difference]: With dead ends: 391 [2020-08-21 21:17:05,938 INFO L226 Difference]: Without dead ends: 281 [2020-08-21 21:17:05,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 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 21:17:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-08-21 21:17:06,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 235. [2020-08-21 21:17:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-21 21:17:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2020-08-21 21:17:06,012 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 78 [2020-08-21 21:17:06,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:06,012 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2020-08-21 21:17:06,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:17:06,013 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2020-08-21 21:17:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 21:17:06,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:06,014 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] [2020-08-21 21:17:06,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:17:06,015 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:06,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:06,015 INFO L82 PathProgramCache]: Analyzing trace with hash -856462191, now seen corresponding path program 1 times [2020-08-21 21:17:06,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:06,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894073454] [2020-08-21 21:17:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,284 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:06,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:17:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 21:17:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 21:17:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 21:17:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:06,388 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 21:17:06,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894073454] [2020-08-21 21:17:06,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:06,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:17:06,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193575163] [2020-08-21 21:17:06,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:17:06,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:06,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:17:06,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:17:06,391 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand 9 states. [2020-08-21 21:17:06,791 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:07,426 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:08,198 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:08,506 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:08,923 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:09,149 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:09,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:09,690 INFO L93 Difference]: Finished difference Result 487 states and 586 transitions. [2020-08-21 21:17:09,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 21:17:09,691 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 21:17:09,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:09,694 INFO L225 Difference]: With dead ends: 487 [2020-08-21 21:17:09,694 INFO L226 Difference]: Without dead ends: 280 [2020-08-21 21:17:09,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 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 21:17:09,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-08-21 21:17:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 234. [2020-08-21 21:17:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-08-21 21:17:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 264 transitions. [2020-08-21 21:17:09,748 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 264 transitions. Word has length 92 [2020-08-21 21:17:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:09,749 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 264 transitions. [2020-08-21 21:17:09,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:17:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 264 transitions. [2020-08-21 21:17:09,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 21:17:09,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:09,751 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, 1, 1, 1, 1, 1, 1] [2020-08-21 21:17:09,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:17:09,751 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:09,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:09,752 INFO L82 PathProgramCache]: Analyzing trace with hash -357754488, now seen corresponding path program 1 times [2020-08-21 21:17:09,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:09,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036212945] [2020-08-21 21:17:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:09,995 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:09,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:17:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 21:17:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 21:17:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 21:17:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:10,114 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 21:17:10,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036212945] [2020-08-21 21:17:10,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:10,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:17:10,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772230240] [2020-08-21 21:17:10,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:17:10,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:10,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:17:10,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:17:10,118 INFO L87 Difference]: Start difference. First operand 234 states and 264 transitions. Second operand 9 states. [2020-08-21 21:17:11,000 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:11,252 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:11,483 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:11,706 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:12,365 INFO L93 Difference]: Finished difference Result 487 states and 589 transitions. [2020-08-21 21:17:12,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:17:12,366 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-21 21:17:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:12,369 INFO L225 Difference]: With dead ends: 487 [2020-08-21 21:17:12,369 INFO L226 Difference]: Without dead ends: 281 [2020-08-21 21:17:12,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 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 21:17:12,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-08-21 21:17:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2020-08-21 21:17:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-21 21:17:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2020-08-21 21:17:12,408 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 108 [2020-08-21 21:17:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:12,409 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2020-08-21 21:17:12,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:17:12,409 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2020-08-21 21:17:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 21:17:12,410 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:12,411 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, 1, 1, 1, 1, 1, 1] [2020-08-21 21:17:12,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:17:12,411 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:12,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1570518214, now seen corresponding path program 1 times [2020-08-21 21:17:12,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:12,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326895676] [2020-08-21 21:17:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,679 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:12,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:17:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 21:17:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 21:17:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 21:17:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:12,834 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 21:17:12,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326895676] [2020-08-21 21:17:12,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:12,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 21:17:12,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995382609] [2020-08-21 21:17:12,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:17:12,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:12,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:17:12,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:17:12,842 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand 11 states. [2020-08-21 21:17:13,513 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:13,742 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:13,975 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:14,668 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:14,914 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:15,141 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:16,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:16,028 INFO L93 Difference]: Finished difference Result 497 states and 600 transitions. [2020-08-21 21:17:16,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:17:16,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-21 21:17:16,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:16,032 INFO L225 Difference]: With dead ends: 497 [2020-08-21 21:17:16,032 INFO L226 Difference]: Without dead ends: 286 [2020-08-21 21:17:16,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:17:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-21 21:17:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 243. [2020-08-21 21:17:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-08-21 21:17:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2020-08-21 21:17:16,097 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 108 [2020-08-21 21:17:16,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:16,098 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2020-08-21 21:17:16,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:17:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2020-08-21 21:17:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 21:17:16,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:16,100 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, 1, 1, 1, 1, 1, 1] [2020-08-21 21:17:16,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:17:16,100 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:16,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1329978085, now seen corresponding path program 1 times [2020-08-21 21:17:16,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:16,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691420661] [2020-08-21 21:17:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,348 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:16,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:17:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 21:17:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 21:17:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 21:17:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:16,508 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 21:17:16,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691420661] [2020-08-21 21:17:16,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:16,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:17:16,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561250281] [2020-08-21 21:17:16,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:17:16,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:16,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:17:16,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:17:16,511 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand 7 states. [2020-08-21 21:17:16,951 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:17,506 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:19,291 INFO L93 Difference]: Finished difference Result 679 states and 838 transitions. [2020-08-21 21:17:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:17:19,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-21 21:17:19,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:19,296 INFO L225 Difference]: With dead ends: 679 [2020-08-21 21:17:19,296 INFO L226 Difference]: Without dead ends: 464 [2020-08-21 21:17:19,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:17:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-08-21 21:17:19,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 422. [2020-08-21 21:17:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-08-21 21:17:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 489 transitions. [2020-08-21 21:17:19,368 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 489 transitions. Word has length 108 [2020-08-21 21:17:19,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:19,368 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 489 transitions. [2020-08-21 21:17:19,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:17:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 489 transitions. [2020-08-21 21:17:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-21 21:17:19,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:19,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:17:19,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:17:19,371 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash 825673247, now seen corresponding path program 1 times [2020-08-21 21:17:19,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:19,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448737280] [2020-08-21 21:17:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,693 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:19,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:17:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:17:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 21:17:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 21:17:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 21:17:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:19,974 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 21:17:19,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448737280] [2020-08-21 21:17:19,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:19,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 21:17:19,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928211770] [2020-08-21 21:17:19,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:17:19,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:19,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:17:19,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:17:19,978 INFO L87 Difference]: Start difference. First operand 422 states and 489 transitions. Second operand 12 states. [2020-08-21 21:17:20,625 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:21,193 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:22,169 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:22,447 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:22,693 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:22,948 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:23,212 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:24,528 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:24,775 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:25,582 INFO L93 Difference]: Finished difference Result 1174 states and 1444 transitions. [2020-08-21 21:17:25,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 21:17:25,582 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-21 21:17:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:25,592 INFO L225 Difference]: With dead ends: 1174 [2020-08-21 21:17:25,592 INFO L226 Difference]: Without dead ends: 854 [2020-08-21 21:17:25,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 21:17:25,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-21 21:17:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 732. [2020-08-21 21:17:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-21 21:17:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 840 transitions. [2020-08-21 21:17:25,835 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 840 transitions. Word has length 112 [2020-08-21 21:17:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:25,835 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 840 transitions. [2020-08-21 21:17:25,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:17:25,835 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 840 transitions. [2020-08-21 21:17:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-21 21:17:25,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:25,838 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, 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] [2020-08-21 21:17:25,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:17:25,839 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1258980138, now seen corresponding path program 1 times [2020-08-21 21:17:25,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:25,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672094873] [2020-08-21 21:17:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,154 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:17:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:17:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:17:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 21:17:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 21:17:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 21:17:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 21:17:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:17:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 21:17:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 21:17:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-21 21:17:26,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672094873] [2020-08-21 21:17:26,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:17:26,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 21:17:26,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144045336] [2020-08-21 21:17:26,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 21:17:26,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:26,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 21:17:26,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:17:26,558 INFO L87 Difference]: Start difference. First operand 732 states and 840 transitions. Second operand 16 states. [2020-08-21 21:17:27,365 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:27,795 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 21:17:28,068 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 21:17:28,332 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 21:17:28,949 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:29,224 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:30,009 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:17:30,648 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:31,128 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:17:31,567 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:31,832 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:32,121 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:32,645 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:33,021 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:33,375 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:17:34,086 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:34,360 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:17:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:35,097 INFO L93 Difference]: Finished difference Result 1607 states and 1899 transitions. [2020-08-21 21:17:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 21:17:35,098 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-21 21:17:35,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:35,105 INFO L225 Difference]: With dead ends: 1607 [2020-08-21 21:17:35,105 INFO L226 Difference]: Without dead ends: 973 [2020-08-21 21:17:35,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 21:17:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-08-21 21:17:35,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 880. [2020-08-21 21:17:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-08-21 21:17:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1018 transitions. [2020-08-21 21:17:35,280 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1018 transitions. Word has length 172 [2020-08-21 21:17:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:35,280 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1018 transitions. [2020-08-21 21:17:35,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 21:17:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1018 transitions. [2020-08-21 21:17:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-21 21:17:35,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:35,287 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:35,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:17:35,287 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:35,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1319050440, now seen corresponding path program 1 times [2020-08-21 21:17:35,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:35,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502849833] [2020-08-21 21:17:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,565 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:35,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:17:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:17:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:17:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 21:17:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 21:17:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:17:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:17:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:17:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-21 21:17:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:17:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:17:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:17:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-21 21:17:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 21:17:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-21 21:17:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:35,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 21:17:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-08-21 21:17:36,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502849833] [2020-08-21 21:17:36,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:17:36,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 21:17:36,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016289369] [2020-08-21 21:17:36,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 21:17:36,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:36,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 21:17:36,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:17:36,062 INFO L87 Difference]: Start difference. First operand 880 states and 1018 transitions. Second operand 15 states. [2020-08-21 21:17:37,519 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:37,784 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:38,024 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:38,268 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:39,567 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:40,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:40,713 INFO L93 Difference]: Finished difference Result 2336 states and 2809 transitions. [2020-08-21 21:17:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 21:17:40,713 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 303 [2020-08-21 21:17:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:40,722 INFO L225 Difference]: With dead ends: 2336 [2020-08-21 21:17:40,722 INFO L226 Difference]: Without dead ends: 1389 [2020-08-21 21:17:40,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 21:17:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-21 21:17:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1170. [2020-08-21 21:17:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-08-21 21:17:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1383 transitions. [2020-08-21 21:17:40,947 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1383 transitions. Word has length 303 [2020-08-21 21:17:40,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:40,950 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1383 transitions. [2020-08-21 21:17:40,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 21:17:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1383 transitions. [2020-08-21 21:17:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-08-21 21:17:40,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:40,958 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, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 21:17:40,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 21:17:40,959 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:40,959 INFO L82 PathProgramCache]: Analyzing trace with hash -919990225, now seen corresponding path program 1 times [2020-08-21 21:17:40,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:40,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635472557] [2020-08-21 21:17:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,240 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:17:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:17:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:17:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 21:17:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 21:17:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:17:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:17:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:17:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:17:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-21 21:17:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:17:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:17:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:17:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-21 21:17:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 21:17:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 21:17:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 21:17:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-21 21:17:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2020-08-21 21:17:41,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635472557] [2020-08-21 21:17:41,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:17:41,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 21:17:41,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89629893] [2020-08-21 21:17:41,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 21:17:41,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:41,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 21:17:41,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:17:41,649 INFO L87 Difference]: Start difference. First operand 1170 states and 1383 transitions. Second operand 16 states. [2020-08-21 21:17:42,255 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:42,588 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 21:17:42,832 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:43,065 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:43,741 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:44,612 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:44,852 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:45,291 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:45,895 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:46,631 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:46,862 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:47,509 INFO L93 Difference]: Finished difference Result 2221 states and 2663 transitions. [2020-08-21 21:17:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 21:17:47,509 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 313 [2020-08-21 21:17:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:47,516 INFO L225 Difference]: With dead ends: 2221 [2020-08-21 21:17:47,516 INFO L226 Difference]: Without dead ends: 1172 [2020-08-21 21:17:47,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 21:17:47,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-08-21 21:17:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1122. [2020-08-21 21:17:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-08-21 21:17:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1309 transitions. [2020-08-21 21:17:47,717 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1309 transitions. Word has length 313 [2020-08-21 21:17:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:47,718 INFO L479 AbstractCegarLoop]: Abstraction has 1122 states and 1309 transitions. [2020-08-21 21:17:47,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 21:17:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1309 transitions. [2020-08-21 21:17:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-08-21 21:17:47,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:47,725 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:47,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 21:17:47,725 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:47,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:47,726 INFO L82 PathProgramCache]: Analyzing trace with hash 372047890, now seen corresponding path program 1 times [2020-08-21 21:17:47,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:47,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065337077] [2020-08-21 21:17:47,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,998 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:17:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:17:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:17:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 21:17:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 21:17:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:17:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:17:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:17:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:17:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-21 21:17:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:17:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:17:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:17:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-08-21 21:17:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-21 21:17:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-21 21:17:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-21 21:17:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 83 proven. 7 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-08-21 21:17:48,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065337077] [2020-08-21 21:17:48,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:17:48,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 21:17:48,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631317560] [2020-08-21 21:17:48,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 21:17:48,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:48,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 21:17:48,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:17:48,439 INFO L87 Difference]: Start difference. First operand 1122 states and 1309 transitions. Second operand 14 states. [2020-08-21 21:17:48,897 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:49,637 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:50,650 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:50,971 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:51,265 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:17:51,527 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 21:17:51,830 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 21:17:52,096 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193