/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:52:57,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:52:57,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:52:57,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:52:57,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:52:57,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:52:57,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:52:57,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:52:57,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:52:57,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:52:57,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:52:57,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:52:57,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:52:57,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:52:57,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:52:57,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:52:57,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:52:57,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:52:57,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:52:57,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:52:57,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:52:57,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:52:57,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:52:57,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:52:57,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:52:57,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:52:57,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:52:57,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:52:57,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:52:57,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:52:57,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:52:57,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:52:57,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:52:57,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:52:57,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:52:57,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:52:57,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:52:57,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:52:57,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:52:57,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:52:57,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:52:57,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:52:57,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:52:57,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:52:57,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:52:57,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:52:57,509 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:52:57,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:52:57,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:52:57,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:52:57,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:52:57,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:52:57,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:52:57,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:52:57,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:52:57,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:52:57,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:52:57,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:52:57,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:52:57,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:52:57,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:52:57,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:52:57,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:52:57,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:52:57,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:52:57,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:52:57,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:52:57,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:52:57,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:52:57,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:52:57,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:52:57,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:52:57,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:52:57,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:52:57,844 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:52:57,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:52:57,846 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:52:57,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-08-18 16:52:57,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0acf9975/525a7564757e4ba7a2403ebe6b0aee01/FLAG143bfdb8b [2020-08-18 16:52:58,514 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:52:58,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-08-18 16:52:58,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0acf9975/525a7564757e4ba7a2403ebe6b0aee01/FLAG143bfdb8b [2020-08-18 16:52:58,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0acf9975/525a7564757e4ba7a2403ebe6b0aee01 [2020-08-18 16:52:58,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:52:58,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:52:58,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:52:58,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:52:58,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:52:58,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:52:58" (1/1) ... [2020-08-18 16:52:58,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:58, skipping insertion in model container [2020-08-18 16:52:58,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:52:58" (1/1) ... [2020-08-18 16:52:58,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:52:58,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:52:59,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:52:59,254 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:52:59,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:52:59,431 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:52:59,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:59 WrapperNode [2020-08-18 16:52:59,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:52:59,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:52:59,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:52:59,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:52:59,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:59" (1/1) ... [2020-08-18 16:52:59,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:59" (1/1) ... [2020-08-18 16:52:59,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:59" (1/1) ... [2020-08-18 16:52:59,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:59" (1/1) ... [2020-08-18 16:52:59,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:59" (1/1) ... [2020-08-18 16:52:59,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:59" (1/1) ... [2020-08-18 16:52:59,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:59" (1/1) ... [2020-08-18 16:52:59,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:52:59,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:52:59,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:52:59,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:52:59,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:52:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:52:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:52:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:52:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:52:59,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:52:59,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:52:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:52:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:52:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:52:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:52:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:52:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:52:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:52:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:52:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:52:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:52:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:52:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:52:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:52:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:52:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:52:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:52:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:52:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:52:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:52:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:52:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:52:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:52:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:52:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:52:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:52:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:52:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:52:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:52:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:52:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:52:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:52:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:52:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:52:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:52:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:52:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:52:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:52:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:52:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:52:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:52:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:52:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:52:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:52:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:52:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:52:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:52:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:52:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:52:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:52:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:52:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:52:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:52:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:52:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:52:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:52:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:52:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:52:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:52:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:52:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:52:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:52:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:52:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:52:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:52:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:52:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:52:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:52:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:52:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:52:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:52:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:52:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:52:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:52:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:52:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:52:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:52:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:52:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:52:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:52:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:52:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:52:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:52:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:52:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:52:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:52:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:53:00,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:53:00,717 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:53:00,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:53:00 BoogieIcfgContainer [2020-08-18 16:53:00,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:53:00,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:53:00,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:53:00,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:53:00,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:52:58" (1/3) ... [2020-08-18 16:53:00,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e749e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:53:00, skipping insertion in model container [2020-08-18 16:53:00,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:52:59" (2/3) ... [2020-08-18 16:53:00,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e749e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:53:00, skipping insertion in model container [2020-08-18 16:53:00,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:53:00" (3/3) ... [2020-08-18 16:53:00,730 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product37.cil.c [2020-08-18 16:53:00,740 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:53:00,748 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:53:00,762 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:53:00,786 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:53:00,787 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:53:00,787 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:53:00,787 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:53:00,787 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:53:00,787 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:53:00,788 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:53:00,788 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:53:00,811 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-18 16:53:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:53:00,825 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:00,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:00,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:00,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1991715745, now seen corresponding path program 1 times [2020-08-18 16:53:00,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:00,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511129910] [2020-08-18 16:53:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:01,470 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:01,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:01,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:01,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:01,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:53:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:53:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:01,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511129910] [2020-08-18 16:53:01,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:01,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:53:01,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509435754] [2020-08-18 16:53:01,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:53:01,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:01,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:53:01,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:53:01,653 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-08-18 16:53:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:02,877 INFO L93 Difference]: Finished difference Result 286 states and 375 transitions. [2020-08-18 16:53:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:53:02,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 16:53:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:02,894 INFO L225 Difference]: With dead ends: 286 [2020-08-18 16:53:02,894 INFO L226 Difference]: Without dead ends: 159 [2020-08-18 16:53:02,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:53:02,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-18 16:53:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2020-08-18 16:53:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 16:53:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2020-08-18 16:53:02,992 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 51 [2020-08-18 16:53:02,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:02,993 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2020-08-18 16:53:02,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:53:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2020-08-18 16:53:02,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:53:02,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:02,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:02,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:53:02,997 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:02,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:02,998 INFO L82 PathProgramCache]: Analyzing trace with hash -392602955, now seen corresponding path program 1 times [2020-08-18 16:53:02,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:02,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615104766] [2020-08-18 16:53:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:03,386 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:03,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:03,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:03,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:03,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:53:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:03,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:03,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615104766] [2020-08-18 16:53:03,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:03,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:53:03,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777529933] [2020-08-18 16:53:03,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:53:03,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:03,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:53:03,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:53:03,442 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand 5 states. [2020-08-18 16:53:03,922 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:04,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:04,784 INFO L93 Difference]: Finished difference Result 231 states and 286 transitions. [2020-08-18 16:53:04,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:53:04,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 16:53:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:04,788 INFO L225 Difference]: With dead ends: 231 [2020-08-18 16:53:04,789 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 16:53:04,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:53:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 16:53:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-18 16:53:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 16:53:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-18 16:53:04,832 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 52 [2020-08-18 16:53:04,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:04,832 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-18 16:53:04,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:53:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-18 16:53:04,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 16:53:04,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:04,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:04,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:53:04,836 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:04,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:04,836 INFO L82 PathProgramCache]: Analyzing trace with hash -368031557, now seen corresponding path program 1 times [2020-08-18 16:53:04,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:04,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970490385] [2020-08-18 16:53:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:05,191 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:05,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:05,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:05,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:05,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:53:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:05,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:53:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:05,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970490385] [2020-08-18 16:53:05,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:05,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:53:05,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505203590] [2020-08-18 16:53:05,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:53:05,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:05,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:53:05,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:53:05,307 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 9 states. [2020-08-18 16:53:05,674 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:05,997 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:06,280 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:06,529 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:07,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:07,757 INFO L93 Difference]: Finished difference Result 240 states and 301 transitions. [2020-08-18 16:53:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:53:07,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 16:53:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:07,769 INFO L225 Difference]: With dead ends: 240 [2020-08-18 16:53:07,770 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 16:53:07,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:53:07,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 16:53:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-18 16:53:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 16:53:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-18 16:53:07,814 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 56 [2020-08-18 16:53:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:07,815 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-18 16:53:07,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:53:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-18 16:53:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 16:53:07,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:07,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:07,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:53:07,818 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:07,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1230357120, now seen corresponding path program 1 times [2020-08-18 16:53:07,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:07,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32312105] [2020-08-18 16:53:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,105 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:08,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:53:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 16:53:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 16:53:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:08,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32312105] [2020-08-18 16:53:08,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:08,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:53:08,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383190439] [2020-08-18 16:53:08,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:53:08,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:08,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:53:08,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:53:08,233 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 7 states. [2020-08-18 16:53:08,639 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:09,886 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:10,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:10,592 INFO L93 Difference]: Finished difference Result 334 states and 423 transitions. [2020-08-18 16:53:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:53:10,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-18 16:53:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:10,601 INFO L225 Difference]: With dead ends: 334 [2020-08-18 16:53:10,601 INFO L226 Difference]: Without dead ends: 243 [2020-08-18 16:53:10,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:53:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-08-18 16:53:10,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 197. [2020-08-18 16:53:10,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-08-18 16:53:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2020-08-18 16:53:10,684 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 69 [2020-08-18 16:53:10,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:10,686 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2020-08-18 16:53:10,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:53:10,686 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2020-08-18 16:53:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 16:53:10,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:10,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:10,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:53:10,694 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:10,694 INFO L82 PathProgramCache]: Analyzing trace with hash 810215565, now seen corresponding path program 1 times [2020-08-18 16:53:10,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:10,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099230168] [2020-08-18 16:53:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,083 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:11,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:53:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 16:53:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:53:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:11,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099230168] [2020-08-18 16:53:11,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:11,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:53:11,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97524688] [2020-08-18 16:53:11,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:53:11,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:11,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:53:11,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:53:11,222 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand 9 states. [2020-08-18 16:53:11,561 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:12,777 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:13,041 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:13,293 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:13,522 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:14,477 INFO L93 Difference]: Finished difference Result 582 states and 737 transitions. [2020-08-18 16:53:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 16:53:14,478 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 16:53:14,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:14,482 INFO L225 Difference]: With dead ends: 582 [2020-08-18 16:53:14,482 INFO L226 Difference]: Without dead ends: 413 [2020-08-18 16:53:14,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 16:53:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-18 16:53:14,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 342. [2020-08-18 16:53:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-08-18 16:53:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 394 transitions. [2020-08-18 16:53:14,553 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 394 transitions. Word has length 83 [2020-08-18 16:53:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:14,553 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 394 transitions. [2020-08-18 16:53:14,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:53:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 394 transitions. [2020-08-18 16:53:14,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 16:53:14,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:14,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:14,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:53:14,556 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:14,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:14,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1817856655, now seen corresponding path program 1 times [2020-08-18 16:53:14,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:14,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519158030] [2020-08-18 16:53:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,830 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 16:53:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:14,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 16:53:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:15,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519158030] [2020-08-18 16:53:15,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:15,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:53:15,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912087310] [2020-08-18 16:53:15,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:53:15,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:15,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:53:15,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:53:15,020 INFO L87 Difference]: Start difference. First operand 342 states and 394 transitions. Second operand 10 states. [2020-08-18 16:53:15,446 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:16,615 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:16,844 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:17,089 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:17,350 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:18,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:18,503 INFO L93 Difference]: Finished difference Result 762 states and 947 transitions. [2020-08-18 16:53:18,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:53:18,504 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-18 16:53:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:18,508 INFO L225 Difference]: With dead ends: 762 [2020-08-18 16:53:18,509 INFO L226 Difference]: Without dead ends: 448 [2020-08-18 16:53:18,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 16:53:18,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-08-18 16:53:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 341. [2020-08-18 16:53:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-18 16:53:18,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 391 transitions. [2020-08-18 16:53:18,586 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 391 transitions. Word has length 87 [2020-08-18 16:53:18,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:18,587 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 391 transitions. [2020-08-18 16:53:18,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:53:18,587 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 391 transitions. [2020-08-18 16:53:18,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:53:18,589 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:18,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:18,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:53:18,589 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:18,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:18,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1046149773, now seen corresponding path program 1 times [2020-08-18 16:53:18,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:18,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465935284] [2020-08-18 16:53:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,823 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:18,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:53:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:53:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:18,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465935284] [2020-08-18 16:53:18,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:18,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:53:18,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706971707] [2020-08-18 16:53:18,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:53:18,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:19,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:53:19,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:53:19,004 INFO L87 Difference]: Start difference. First operand 341 states and 391 transitions. Second operand 10 states. [2020-08-18 16:53:20,008 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:20,259 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:53:20,512 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:20,750 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:21,820 INFO L93 Difference]: Finished difference Result 765 states and 956 transitions. [2020-08-18 16:53:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:53:21,821 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 16:53:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:21,824 INFO L225 Difference]: With dead ends: 765 [2020-08-18 16:53:21,825 INFO L226 Difference]: Without dead ends: 452 [2020-08-18 16:53:21,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:53:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-18 16:53:21,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 351. [2020-08-18 16:53:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-18 16:53:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2020-08-18 16:53:21,933 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 88 [2020-08-18 16:53:21,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:21,934 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2020-08-18 16:53:21,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:53:21,934 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2020-08-18 16:53:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:53:21,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:21,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:21,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:53:21,937 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:21,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:21,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1747749647, now seen corresponding path program 1 times [2020-08-18 16:53:21,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:21,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076348823] [2020-08-18 16:53:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,195 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:22,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:53:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:53:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:22,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076348823] [2020-08-18 16:53:22,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:22,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:53:22,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511598807] [2020-08-18 16:53:22,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:53:22,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:22,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:53:22,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:53:22,361 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 12 states. [2020-08-18 16:53:22,807 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:23,050 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:23,302 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:23,963 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:24,216 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:24,469 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:25,708 INFO L93 Difference]: Finished difference Result 789 states and 998 transitions. [2020-08-18 16:53:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:53:25,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-18 16:53:25,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:25,715 INFO L225 Difference]: With dead ends: 789 [2020-08-18 16:53:25,715 INFO L226 Difference]: Without dead ends: 466 [2020-08-18 16:53:25,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 16:53:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-18 16:53:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 359. [2020-08-18 16:53:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-08-18 16:53:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 409 transitions. [2020-08-18 16:53:25,831 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 409 transitions. Word has length 88 [2020-08-18 16:53:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:25,832 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 409 transitions. [2020-08-18 16:53:25,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:53:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 409 transitions. [2020-08-18 16:53:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:53:25,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:25,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:25,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:53:25,836 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:25,837 INFO L82 PathProgramCache]: Analyzing trace with hash -821736752, now seen corresponding path program 1 times [2020-08-18 16:53:25,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:25,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852133456] [2020-08-18 16:53:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,178 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:26,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:53:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:53:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:26,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852133456] [2020-08-18 16:53:26,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:26,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:53:26,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646372185] [2020-08-18 16:53:26,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:53:26,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:26,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:53:26,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:53:26,325 INFO L87 Difference]: Start difference. First operand 359 states and 409 transitions. Second operand 8 states. [2020-08-18 16:53:26,674 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:27,192 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:29,441 INFO L93 Difference]: Finished difference Result 1108 states and 1449 transitions. [2020-08-18 16:53:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:53:29,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-18 16:53:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:29,448 INFO L225 Difference]: With dead ends: 1108 [2020-08-18 16:53:29,448 INFO L226 Difference]: Without dead ends: 777 [2020-08-18 16:53:29,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:53:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-18 16:53:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 645. [2020-08-18 16:53:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-08-18 16:53:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 763 transitions. [2020-08-18 16:53:29,589 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 763 transitions. Word has length 88 [2020-08-18 16:53:29,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:29,592 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 763 transitions. [2020-08-18 16:53:29,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:53:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 763 transitions. [2020-08-18 16:53:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 16:53:29,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:29,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:29,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:53:29,598 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:29,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1708334166, now seen corresponding path program 1 times [2020-08-18 16:53:29,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:29,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338549536] [2020-08-18 16:53:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,913 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:53:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:53:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:53:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 16:53:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 16:53:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:30,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338549536] [2020-08-18 16:53:30,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:30,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:53:30,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872009473] [2020-08-18 16:53:30,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:53:30,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:30,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:53:30,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:53:30,015 INFO L87 Difference]: Start difference. First operand 645 states and 763 transitions. Second operand 8 states. [2020-08-18 16:53:30,456 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:32,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:32,948 INFO L93 Difference]: Finished difference Result 1272 states and 1654 transitions. [2020-08-18 16:53:32,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:53:32,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-18 16:53:32,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:32,957 INFO L225 Difference]: With dead ends: 1272 [2020-08-18 16:53:32,958 INFO L226 Difference]: Without dead ends: 1269 [2020-08-18 16:53:32,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-18 16:53:32,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-08-18 16:53:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1071. [2020-08-18 16:53:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-18 16:53:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1280 transitions. [2020-08-18 16:53:33,163 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1280 transitions. Word has length 92 [2020-08-18 16:53:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:33,164 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1280 transitions. [2020-08-18 16:53:33,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:53:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1280 transitions. [2020-08-18 16:53:33,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 16:53:33,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:33,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:33,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:53:33,169 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:33,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:33,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1546611492, now seen corresponding path program 1 times [2020-08-18 16:53:33,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:33,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982628202] [2020-08-18 16:53:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,459 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:33,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:53:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:53:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:53:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:53:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:53:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 16:53:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 16:53:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:53:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 16:53:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 16:53:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 16:53:33,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982628202] [2020-08-18 16:53:33,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:53:33,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 16:53:33,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510837949] [2020-08-18 16:53:33,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 16:53:33,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:33,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 16:53:33,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:53:33,838 INFO L87 Difference]: Start difference. First operand 1071 states and 1280 transitions. Second operand 19 states. [2020-08-18 16:53:34,828 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:35,240 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:53:35,490 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:53:35,734 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:53:36,376 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:37,503 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:37,884 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:39,168 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:39,446 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:39,741 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:39,992 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:40,234 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:40,478 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:40,764 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:41,018 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:41,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:41,734 INFO L93 Difference]: Finished difference Result 2024 states and 2482 transitions. [2020-08-18 16:53:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-18 16:53:41,735 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-18 16:53:41,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:41,744 INFO L225 Difference]: With dead ends: 2024 [2020-08-18 16:53:41,744 INFO L226 Difference]: Without dead ends: 981 [2020-08-18 16:53:41,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 16:53:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-08-18 16:53:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 858. [2020-08-18 16:53:41,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-08-18 16:53:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 979 transitions. [2020-08-18 16:53:41,924 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 979 transitions. Word has length 150 [2020-08-18 16:53:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:41,925 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 979 transitions. [2020-08-18 16:53:41,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 16:53:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 979 transitions. [2020-08-18 16:53:41,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 16:53:41,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:41,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:41,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:53:41,929 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:41,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:41,930 INFO L82 PathProgramCache]: Analyzing trace with hash 182941043, now seen corresponding path program 1 times [2020-08-18 16:53:41,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:41,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412469780] [2020-08-18 16:53:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,222 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:42,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:53:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:53:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:53:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:53:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:53:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 16:53:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 16:53:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 16:53:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 16:53:42,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412469780] [2020-08-18 16:53:42,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:53:42,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 16:53:42,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715856905] [2020-08-18 16:53:42,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:53:42,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:42,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:53:42,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:53:42,457 INFO L87 Difference]: Start difference. First operand 858 states and 979 transitions. Second operand 13 states. [2020-08-18 16:53:42,994 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:43,248 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:43,489 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:44,451 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:46,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:46,058 INFO L93 Difference]: Finished difference Result 1517 states and 1820 transitions. [2020-08-18 16:53:46,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 16:53:46,058 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-08-18 16:53:46,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:46,060 INFO L225 Difference]: With dead ends: 1517 [2020-08-18 16:53:46,060 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:53:46,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-18 16:53:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:53:46,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:53:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:53:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:53:46,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2020-08-18 16:53:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:46,066 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:53:46,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:53:46,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:53:46,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:53:46,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:53:46,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:53:47,085 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-18 16:53:47,349 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 201 [2020-08-18 16:53:47,907 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-18 16:53:48,206 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-18 16:53:48,471 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-18 16:53:49,123 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-18 16:53:50,088 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 297 [2020-08-18 16:53:51,216 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-18 16:53:51,394 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 201 [2020-08-18 16:53:51,910 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-18 16:53:52,208 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-18 16:53:52,725 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-18 16:53:53,603 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 310 [2020-08-18 16:53:55,369 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 25 [2020-08-18 16:53:55,542 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 1 [2020-08-18 16:53:55,715 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 1 [2020-08-18 16:53:55,904 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 27 [2020-08-18 16:53:56,431 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 24