/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:38:13,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:38:13,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:38:13,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:38:13,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:38:13,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:38:13,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:38:13,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:38:13,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:38:13,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:38:13,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:38:13,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:38:13,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:38:13,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:38:13,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:38:13,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:38:13,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:38:13,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:38:13,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:38:13,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:38:13,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:38:13,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:38:13,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:38:13,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:38:13,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:38:13,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:38:13,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:38:13,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:38:13,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:38:13,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:38:13,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:38:13,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:38:13,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:38:13,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:38:13,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:38:13,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:38:13,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:38:13,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:38:13,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:38:13,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:38:13,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:38:13,392 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:38:13,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:38:13,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:38:13,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:38:13,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:38:13,442 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:38:13,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:38:13,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:38:13,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:38:13,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:38:13,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:38:13,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:38:13,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:38:13,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:38:13,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:38:13,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:38:13,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:38:13,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:38:13,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:38:13,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:38:13,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:38:13,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:38:13,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:38:13,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:38:13,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:38:13,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:38:13,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:38:13,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:38:13,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:38:13,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:38:13,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:38:13,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:38:13,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:38:13,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:38:13,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:38:13,791 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:38:13,792 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c [2020-08-21 15:38:13,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/103e16418/e2b17ca736244638b9e68df4c5d0f712/FLAGc544fadcb [2020-08-21 15:38:14,364 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:38:14,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c [2020-08-21 15:38:14,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/103e16418/e2b17ca736244638b9e68df4c5d0f712/FLAGc544fadcb [2020-08-21 15:38:14,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/103e16418/e2b17ca736244638b9e68df4c5d0f712 [2020-08-21 15:38:14,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:38:14,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:38:14,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:38:14,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:38:14,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:38:14,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:38:14" (1/1) ... [2020-08-21 15:38:14,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4365ba2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14, skipping insertion in model container [2020-08-21 15:38:14,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:38:14" (1/1) ... [2020-08-21 15:38:14,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:38:14,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:38:15,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:38:15,278 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:38:15,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:38:15,437 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:38:15,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:15 WrapperNode [2020-08-21 15:38:15,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:38:15,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:38:15,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:38:15,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:38:15,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:15" (1/1) ... [2020-08-21 15:38:15,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:15" (1/1) ... [2020-08-21 15:38:15,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:15" (1/1) ... [2020-08-21 15:38:15,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:15" (1/1) ... [2020-08-21 15:38:15,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:15" (1/1) ... [2020-08-21 15:38:15,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:15" (1/1) ... [2020-08-21 15:38:15,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:15" (1/1) ... [2020-08-21 15:38:15,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:38:15,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:38:15,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:38:15,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:38:15,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:38:15,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:38:15,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:38:15,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:38:15,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:38:15,611 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:38:15,611 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:38:15,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:38:15,611 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:38:15,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:38:15,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 15:38:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 15:38:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 15:38:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:38:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:38:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:38:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:38:15,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:38:15,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:38:15,613 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:38:15,613 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:38:15,613 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:38:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:38:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:38:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:38:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:38:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:38:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:38:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:38:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:38:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:38:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:38:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:38:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:38:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:38:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:38:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:38:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:38:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:38:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:38:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:38:15,617 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:38:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:38:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:38:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:38:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:38:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:38:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:38:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:38:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:38:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:38:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:38:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:38:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 15:38:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:38:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:38:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:38:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:38:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:38:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:38:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:38:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:38:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 15:38:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 15:38:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:38:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:38:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:38:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:38:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:38:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:38:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:38:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:38:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:38:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:38:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:38:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:38:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:38:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:38:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:38:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:38:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:38:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:38:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:38:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:38:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:38:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:38:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:38:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:38:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:38:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:38:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:38:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:38:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:38:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:38:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:38:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:38:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:38:16,713 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:38:16,713 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:38:16,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:38:16 BoogieIcfgContainer [2020-08-21 15:38:16,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:38:16,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:38:16,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:38:16,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:38:16,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:38:14" (1/3) ... [2020-08-21 15:38:16,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfdcae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:38:16, skipping insertion in model container [2020-08-21 15:38:16,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:15" (2/3) ... [2020-08-21 15:38:16,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfdcae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:38:16, skipping insertion in model container [2020-08-21 15:38:16,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:38:16" (3/3) ... [2020-08-21 15:38:16,727 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product38.cil.c [2020-08-21 15:38:16,738 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:38:16,746 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:38:16,760 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:38:16,785 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:38:16,785 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:38:16,786 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:38:16,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:38:16,786 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:38:16,786 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:38:16,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:38:16,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:38:16,808 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-21 15:38:16,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 15:38:16,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:16,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:16,818 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1109188308, now seen corresponding path program 1 times [2020-08-21 15:38:16,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:16,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900924843] [2020-08-21 15:38:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,590 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:17,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:38:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:38:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:17,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900924843] [2020-08-21 15:38:17,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:17,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:38:17,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512622549] [2020-08-21 15:38:17,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:38:17,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:17,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:38:17,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:38:17,719 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2020-08-21 15:38:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:18,826 INFO L93 Difference]: Finished difference Result 309 states and 395 transitions. [2020-08-21 15:38:18,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:38:18,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 15:38:18,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:18,843 INFO L225 Difference]: With dead ends: 309 [2020-08-21 15:38:18,843 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 15:38:18,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:38:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 15:38:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 140. [2020-08-21 15:38:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-21 15:38:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 163 transitions. [2020-08-21 15:38:18,937 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 163 transitions. Word has length 59 [2020-08-21 15:38:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:18,938 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 163 transitions. [2020-08-21 15:38:18,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:38:18,938 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 163 transitions. [2020-08-21 15:38:18,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 15:38:18,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:18,942 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:18,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:38:18,945 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:18,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash 813843432, now seen corresponding path program 1 times [2020-08-21 15:38:18,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:18,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805245194] [2020-08-21 15:38:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,292 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:19,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:38:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:38:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 15:38:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:19,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805245194] [2020-08-21 15:38:19,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:19,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:38:19,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007922748] [2020-08-21 15:38:19,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:38:19,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:19,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:38:19,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:38:19,360 INFO L87 Difference]: Start difference. First operand 140 states and 163 transitions. Second operand 5 states. [2020-08-21 15:38:19,816 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:20,716 INFO L93 Difference]: Finished difference Result 250 states and 303 transitions. [2020-08-21 15:38:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:38:20,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 15:38:20,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:20,720 INFO L225 Difference]: With dead ends: 250 [2020-08-21 15:38:20,720 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 15:38:20,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:38:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 15:38:20,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 131. [2020-08-21 15:38:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 15:38:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-08-21 15:38:20,763 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 60 [2020-08-21 15:38:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:20,763 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-08-21 15:38:20,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:38:20,764 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-08-21 15:38:20,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 15:38:20,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:20,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:20,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:38:20,766 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:20,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:20,766 INFO L82 PathProgramCache]: Analyzing trace with hash 605286682, now seen corresponding path program 1 times [2020-08-21 15:38:20,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:20,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390342222] [2020-08-21 15:38:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,130 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:21,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:38:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:38:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:21,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390342222] [2020-08-21 15:38:21,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:21,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:21,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061931123] [2020-08-21 15:38:21,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:21,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:21,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:21,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:21,261 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 9 states. [2020-08-21 15:38:21,650 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:21,968 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:22,257 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:22,499 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:23,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:23,747 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2020-08-21 15:38:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:38:23,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 15:38:23,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:23,751 INFO L225 Difference]: With dead ends: 263 [2020-08-21 15:38:23,751 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 15:38:23,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:38:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 15:38:23,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 131. [2020-08-21 15:38:23,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 15:38:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2020-08-21 15:38:23,787 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 65 [2020-08-21 15:38:23,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:23,787 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2020-08-21 15:38:23,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2020-08-21 15:38:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 15:38:23,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:23,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:23,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:38:23,795 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:23,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1239264208, now seen corresponding path program 1 times [2020-08-21 15:38:23,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:23,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917286070] [2020-08-21 15:38:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,090 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:38:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 15:38:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 15:38:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:24,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917286070] [2020-08-21 15:38:24,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:24,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:38:24,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285075168] [2020-08-21 15:38:24,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:38:24,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:24,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:38:24,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:38:24,205 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand 7 states. [2020-08-21 15:38:24,616 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:26,122 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:26,658 INFO L93 Difference]: Finished difference Result 367 states and 456 transitions. [2020-08-21 15:38:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:38:26,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-21 15:38:26,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:26,663 INFO L225 Difference]: With dead ends: 367 [2020-08-21 15:38:26,663 INFO L226 Difference]: Without dead ends: 264 [2020-08-21 15:38:26,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:38:26,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-21 15:38:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 218. [2020-08-21 15:38:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-21 15:38:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 249 transitions. [2020-08-21 15:38:26,716 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 249 transitions. Word has length 78 [2020-08-21 15:38:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:26,717 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 249 transitions. [2020-08-21 15:38:26,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:38:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 249 transitions. [2020-08-21 15:38:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 15:38:26,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:26,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:26,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:38:26,719 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:26,719 INFO L82 PathProgramCache]: Analyzing trace with hash 462053503, now seen corresponding path program 1 times [2020-08-21 15:38:26,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:26,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880935023] [2020-08-21 15:38:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,993 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:38:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 15:38:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 15:38:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 15:38:27,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880935023] [2020-08-21 15:38:27,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:27,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:27,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221268740] [2020-08-21 15:38:27,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:27,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:27,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:27,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:27,246 INFO L87 Difference]: Start difference. First operand 218 states and 249 transitions. Second operand 9 states. [2020-08-21 15:38:27,596 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:28,295 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:28,986 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:29,296 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:29,759 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:30,006 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:30,613 INFO L93 Difference]: Finished difference Result 453 states and 550 transitions. [2020-08-21 15:38:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:38:30,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 15:38:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:30,618 INFO L225 Difference]: With dead ends: 453 [2020-08-21 15:38:30,618 INFO L226 Difference]: Without dead ends: 263 [2020-08-21 15:38:30,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:38:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-08-21 15:38:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 217. [2020-08-21 15:38:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-08-21 15:38:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 246 transitions. [2020-08-21 15:38:30,668 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 246 transitions. Word has length 92 [2020-08-21 15:38:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:30,669 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 246 transitions. [2020-08-21 15:38:30,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:30,669 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 246 transitions. [2020-08-21 15:38:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 15:38:30,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:30,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:30,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:38:30,671 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:30,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:30,672 INFO L82 PathProgramCache]: Analyzing trace with hash -440444759, now seen corresponding path program 1 times [2020-08-21 15:38:30,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:30,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151843809] [2020-08-21 15:38:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,896 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:30,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:38:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 15:38:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:38:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:31,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151843809] [2020-08-21 15:38:31,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:31,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:31,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315927549] [2020-08-21 15:38:31,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:31,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:31,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:31,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:31,012 INFO L87 Difference]: Start difference. First operand 217 states and 246 transitions. Second operand 9 states. [2020-08-21 15:38:31,954 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:32,182 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:32,413 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:32,647 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:33,336 INFO L93 Difference]: Finished difference Result 451 states and 544 transitions. [2020-08-21 15:38:33,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:38:33,339 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 15:38:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:33,342 INFO L225 Difference]: With dead ends: 451 [2020-08-21 15:38:33,342 INFO L226 Difference]: Without dead ends: 262 [2020-08-21 15:38:33,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:38:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-08-21 15:38:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 222. [2020-08-21 15:38:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-08-21 15:38:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 251 transitions. [2020-08-21 15:38:33,391 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 251 transitions. Word has length 93 [2020-08-21 15:38:33,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:33,392 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 251 transitions. [2020-08-21 15:38:33,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:33,392 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 251 transitions. [2020-08-21 15:38:33,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 15:38:33,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:33,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:33,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:38:33,394 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:33,395 INFO L82 PathProgramCache]: Analyzing trace with hash 261155115, now seen corresponding path program 1 times [2020-08-21 15:38:33,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:33,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603767637] [2020-08-21 15:38:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,695 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:33,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:38:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 15:38:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:38:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:33,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603767637] [2020-08-21 15:38:33,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:33,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 15:38:33,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104438245] [2020-08-21 15:38:33,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:38:33,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:33,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:38:33,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:38:33,838 INFO L87 Difference]: Start difference. First operand 222 states and 251 transitions. Second operand 11 states. [2020-08-21 15:38:34,280 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:34,526 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:34,746 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:35,470 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:35,724 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:35,962 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:36,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:36,749 INFO L93 Difference]: Finished difference Result 463 states and 564 transitions. [2020-08-21 15:38:36,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:38:36,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 15:38:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:36,755 INFO L225 Difference]: With dead ends: 463 [2020-08-21 15:38:36,756 INFO L226 Difference]: Without dead ends: 269 [2020-08-21 15:38:36,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:38:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-21 15:38:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-08-21 15:38:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-21 15:38:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2020-08-21 15:38:36,808 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 93 [2020-08-21 15:38:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:36,808 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2020-08-21 15:38:36,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:38:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2020-08-21 15:38:36,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 15:38:36,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:36,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:36,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:38:36,810 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:36,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:36,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1986636012, now seen corresponding path program 1 times [2020-08-21 15:38:36,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:36,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614138701] [2020-08-21 15:38:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,101 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:37,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:38:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 15:38:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:38:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:37,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614138701] [2020-08-21 15:38:37,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:37,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:38:37,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803683314] [2020-08-21 15:38:37,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:38:37,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:37,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:38:37,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:38:37,236 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand 7 states. [2020-08-21 15:38:37,594 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:38,132 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:39,881 INFO L93 Difference]: Finished difference Result 645 states and 802 transitions. [2020-08-21 15:38:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:38:39,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-21 15:38:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:39,885 INFO L225 Difference]: With dead ends: 645 [2020-08-21 15:38:39,885 INFO L226 Difference]: Without dead ends: 447 [2020-08-21 15:38:39,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:38:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-08-21 15:38:39,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 405. [2020-08-21 15:38:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-08-21 15:38:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 471 transitions. [2020-08-21 15:38:39,950 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 471 transitions. Word has length 93 [2020-08-21 15:38:39,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:39,950 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 471 transitions. [2020-08-21 15:38:39,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:38:39,951 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 471 transitions. [2020-08-21 15:38:39,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 15:38:39,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:39,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:39,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:38:39,953 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:39,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:39,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1429929390, now seen corresponding path program 1 times [2020-08-21 15:38:39,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:39,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036531313] [2020-08-21 15:38:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,289 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 15:38:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 15:38:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 15:38:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 15:38:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:40,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036531313] [2020-08-21 15:38:40,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:40,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:38:40,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354118186] [2020-08-21 15:38:40,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:38:40,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:40,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:38:40,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:38:40,510 INFO L87 Difference]: Start difference. First operand 405 states and 471 transitions. Second operand 12 states. [2020-08-21 15:38:40,878 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:41,522 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:42,578 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:42,897 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:43,134 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:43,394 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:43,637 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:44,729 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:45,001 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:45,654 INFO L93 Difference]: Finished difference Result 1123 states and 1390 transitions. [2020-08-21 15:38:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 15:38:45,655 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-21 15:38:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:45,662 INFO L225 Difference]: With dead ends: 1123 [2020-08-21 15:38:45,662 INFO L226 Difference]: Without dead ends: 820 [2020-08-21 15:38:45,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 15:38:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-08-21 15:38:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 698. [2020-08-21 15:38:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2020-08-21 15:38:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 804 transitions. [2020-08-21 15:38:45,812 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 804 transitions. Word has length 97 [2020-08-21 15:38:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:45,813 INFO L479 AbstractCegarLoop]: Abstraction has 698 states and 804 transitions. [2020-08-21 15:38:45,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:38:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 804 transitions. [2020-08-21 15:38:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 15:38:45,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:45,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:45,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:38:45,819 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:45,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:45,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1557984819, now seen corresponding path program 1 times [2020-08-21 15:38:45,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:45,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978661869] [2020-08-21 15:38:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,181 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:38:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:38:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 15:38:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 15:38:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 15:38:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:38:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 15:38:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 15:38:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 15:38:46,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978661869] [2020-08-21 15:38:46,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:38:46,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:38:46,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713425822] [2020-08-21 15:38:46,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:38:46,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:46,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:38:46,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:38:46,565 INFO L87 Difference]: Start difference. First operand 698 states and 804 transitions. Second operand 16 states. [2020-08-21 15:38:47,381 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:47,751 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:38:48,021 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:38:48,294 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:38:48,977 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:49,247 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:50,004 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:50,339 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:38:51,245 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:51,527 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:38:51,785 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:52,062 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:52,584 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:52,985 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:53,351 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:38:53,945 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:54,204 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:38:54,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:54,734 INFO L93 Difference]: Finished difference Result 1539 states and 1827 transitions. [2020-08-21 15:38:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 15:38:54,736 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-21 15:38:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:54,743 INFO L225 Difference]: With dead ends: 1539 [2020-08-21 15:38:54,743 INFO L226 Difference]: Without dead ends: 939 [2020-08-21 15:38:54,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 15:38:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-21 15:38:54,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 846. [2020-08-21 15:38:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-08-21 15:38:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 982 transitions. [2020-08-21 15:38:54,936 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 982 transitions. Word has length 157 [2020-08-21 15:38:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:54,941 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 982 transitions. [2020-08-21 15:38:54,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:38:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 982 transitions. [2020-08-21 15:38:54,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-21 15:38:54,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:54,950 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:54,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:38:54,951 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:54,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:54,951 INFO L82 PathProgramCache]: Analyzing trace with hash -2097362584, now seen corresponding path program 1 times [2020-08-21 15:38:54,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:54,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172359742] [2020-08-21 15:38:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,246 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:55,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:38:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:38:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 15:38:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:38:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:38:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-21 15:38:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:38:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:38:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:38:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-21 15:38:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 15:38:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 15:38:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-21 15:38:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 15:38:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-21 15:38:55,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172359742] [2020-08-21 15:38:55,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:38:55,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 15:38:55,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261242202] [2020-08-21 15:38:55,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 15:38:55,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:55,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 15:38:55,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:38:55,764 INFO L87 Difference]: Start difference. First operand 846 states and 982 transitions. Second operand 15 states. [2020-08-21 15:38:58,019 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:58,289 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:58,533 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:58,764 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:00,036 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:00,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:00,618 INFO L93 Difference]: Finished difference Result 2234 states and 2701 transitions. [2020-08-21 15:39:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 15:39:00,619 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-21 15:39:00,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:00,626 INFO L225 Difference]: With dead ends: 2234 [2020-08-21 15:39:00,626 INFO L226 Difference]: Without dead ends: 1321 [2020-08-21 15:39:00,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 15:39:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-08-21 15:39:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1119. [2020-08-21 15:39:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-08-21 15:39:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1329 transitions. [2020-08-21 15:39:00,833 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1329 transitions. Word has length 277 [2020-08-21 15:39:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:00,834 INFO L479 AbstractCegarLoop]: Abstraction has 1119 states and 1329 transitions. [2020-08-21 15:39:00,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 15:39:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1329 transitions. [2020-08-21 15:39:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-21 15:39:00,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:00,840 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:00,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:39:00,840 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:00,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:00,841 INFO L82 PathProgramCache]: Analyzing trace with hash -924921395, now seen corresponding path program 1 times [2020-08-21 15:39:00,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:00,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377296734] [2020-08-21 15:39:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,135 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:01,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:39:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 15:39:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:39:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:39:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 15:39:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:39:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:39:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-21 15:39:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 15:39:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-21 15:39:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 15:39:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 15:39:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 91 proven. 36 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-08-21 15:39:01,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377296734] [2020-08-21 15:39:01,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:39:01,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:39:01,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018990786] [2020-08-21 15:39:01,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:39:01,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:01,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:39:01,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:39:01,655 INFO L87 Difference]: Start difference. First operand 1119 states and 1329 transitions. Second operand 16 states. [2020-08-21 15:39:02,185 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:02,581 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:02,836 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:03,089 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:03,787 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:04,550 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:04,922 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:05,204 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:05,857 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:06,617 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:06,856 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:07,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:07,364 INFO L93 Difference]: Finished difference Result 2119 states and 2555 transitions. [2020-08-21 15:39:07,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 15:39:07,365 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-21 15:39:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:07,373 INFO L225 Difference]: With dead ends: 2119 [2020-08-21 15:39:07,373 INFO L226 Difference]: Without dead ends: 1121 [2020-08-21 15:39:07,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 15:39:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2020-08-21 15:39:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1071. [2020-08-21 15:39:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-21 15:39:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1255 transitions. [2020-08-21 15:39:07,632 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1255 transitions. Word has length 283 [2020-08-21 15:39:07,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:07,633 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1255 transitions. [2020-08-21 15:39:07,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:39:07,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1255 transitions. [2020-08-21 15:39:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-21 15:39:07,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:07,640 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:07,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:39:07,640 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:07,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:07,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1544148796, now seen corresponding path program 1 times [2020-08-21 15:39:07,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:07,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428612276] [2020-08-21 15:39:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:07,923 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:07,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:07,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:39:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:07,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:07,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 15:39:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:39:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:39:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-21 15:39:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:39:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:39:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-21 15:39:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 15:39:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-21 15:39:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-21 15:39:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-08-21 15:39:08,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428612276] [2020-08-21 15:39:08,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:39:08,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 15:39:08,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559954271] [2020-08-21 15:39:08,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 15:39:08,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:08,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 15:39:08,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:39:08,301 INFO L87 Difference]: Start difference. First operand 1071 states and 1255 transitions. Second operand 14 states. [2020-08-21 15:39:08,720 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:09,512 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:11,931 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:12,199 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:12,446 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:12,717 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 15:39:12,976 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:13,239 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 15:39:13,699 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192