/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:03:25,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:03:25,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:03:25,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:03:25,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:03:25,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:03:25,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:03:25,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:03:25,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:03:25,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:03:25,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:03:25,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:03:25,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:03:25,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:03:25,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:03:25,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:03:25,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:03:25,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:03:25,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:03:25,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:03:25,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:03:25,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:03:25,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:03:25,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:03:25,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:03:25,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:03:25,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:03:25,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:03:25,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:03:25,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:03:25,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:03:25,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:03:25,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:03:25,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:03:25,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:03:25,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:03:25,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:03:25,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:03:25,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:03:25,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:03:25,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:03:25,406 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 [2020-08-19 01:03:25,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:03:25,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:03:25,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:03:25,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:03:25,450 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:03:25,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:03:25,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:03:25,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:03:25,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:03:25,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:03:25,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:03:25,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:03:25,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:03:25,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:03:25,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:03:25,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:03:25,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:03:25,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:03:25,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:03:25,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:03:25,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:03:25,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:03:25,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:03:25,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:03:25,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:03:25,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:03:25,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:03:25,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:03:25,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:03:25,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:03:25,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:03:25,765 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:03:25,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:03:25,770 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:03:25,771 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:03:25,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2020-08-19 01:03:25,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61daabda0/6f37d28da8d04e49b99e18b80f69bc32/FLAG028426c11 [2020-08-19 01:03:26,397 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:03:26,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2020-08-19 01:03:26,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61daabda0/6f37d28da8d04e49b99e18b80f69bc32/FLAG028426c11 [2020-08-19 01:03:26,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61daabda0/6f37d28da8d04e49b99e18b80f69bc32 [2020-08-19 01:03:26,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:03:26,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:03:26,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:03:26,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:03:26,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:03:26,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:03:26" (1/1) ... [2020-08-19 01:03:26,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af20ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:26, skipping insertion in model container [2020-08-19 01:03:26,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:03:26" (1/1) ... [2020-08-19 01:03:26,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:03:26,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:03:27,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:03:27,294 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:03:27,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:03:27,408 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:03:27,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:27 WrapperNode [2020-08-19 01:03:27,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:03:27,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:03:27,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:03:27,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:03:27,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:27" (1/1) ... [2020-08-19 01:03:27,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:27" (1/1) ... [2020-08-19 01:03:27,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:27" (1/1) ... [2020-08-19 01:03:27,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:27" (1/1) ... [2020-08-19 01:03:27,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:27" (1/1) ... [2020-08-19 01:03:27,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:27" (1/1) ... [2020-08-19 01:03:27,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:27" (1/1) ... [2020-08-19 01:03:27,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:03:27,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:03:27,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:03:27,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:03:27,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:27" (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 [2020-08-19 01:03:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:03:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:03:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:03:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:03:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:03:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:03:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:03:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:03:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:03:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:03:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:03:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:03:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:03:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:03:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:03:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:03:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:03:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:03:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:03:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:03:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:03:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:03:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 01:03:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:03:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 01:03:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:03:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:03:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:03:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:03:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:03:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:03:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:03:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:03:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:03:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:03:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:03:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:03:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:03:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:03:27,624 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:03:27,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:03:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:03:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:03:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:03:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:03:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:03:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:03:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:03:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:03:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:03:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:03:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:03:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:03:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:03:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:03:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:03:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:03:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:03:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:03:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:03:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:03:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:03:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:03:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:03:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:03:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:03:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:03:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:03:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:03:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:03:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:03:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:03:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:03:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:03:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:03:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:03:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:03:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:03:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:03:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:03:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 01:03:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:03:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 01:03:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:03:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:03:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:03:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:03:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:03:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:03:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:03:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:03:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:03:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:03:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:03:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:03:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:03:28,650 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:03:28,651 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:03:28,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:03:28 BoogieIcfgContainer [2020-08-19 01:03:28,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:03:28,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:03:28,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:03:28,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:03:28,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:03:26" (1/3) ... [2020-08-19 01:03:28,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c4f579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:03:28, skipping insertion in model container [2020-08-19 01:03:28,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:03:27" (2/3) ... [2020-08-19 01:03:28,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c4f579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:03:28, skipping insertion in model container [2020-08-19 01:03:28,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:03:28" (3/3) ... [2020-08-19 01:03:28,670 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product45.cil.c [2020-08-19 01:03:28,681 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:03:28,690 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:03:28,705 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:03:28,736 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:03:28,737 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:03:28,737 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:03:28,737 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:03:28,737 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:03:28,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:03:28,738 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:03:28,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:03:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-19 01:03:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:03:28,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:03:28,785 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] [2020-08-19 01:03:28,786 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:03:28,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:03:28,793 INFO L82 PathProgramCache]: Analyzing trace with hash -587014934, now seen corresponding path program 1 times [2020-08-19 01:03:28,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:03:28,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461109373] [2020-08-19 01:03:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:03:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,500 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:03:29,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:03:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:03:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:03:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:03:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:03:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:03:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:03:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:03:29,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461109373] [2020-08-19 01:03:29,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:03:29,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:03:29,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395547541] [2020-08-19 01:03:29,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:03:29,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:03:29,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:03:29,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:03:29,659 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-08-19 01:03:30,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:03:30,853 INFO L93 Difference]: Finished difference Result 315 states and 403 transitions. [2020-08-19 01:03:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:03:30,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:03:30,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:03:30,883 INFO L225 Difference]: With dead ends: 315 [2020-08-19 01:03:30,883 INFO L226 Difference]: Without dead ends: 173 [2020-08-19 01:03:30,891 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 [2020-08-19 01:03:30,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-19 01:03:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 143. [2020-08-19 01:03:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-19 01:03:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-08-19 01:03:31,043 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 59 [2020-08-19 01:03:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:03:31,044 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-08-19 01:03:31,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:03:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-08-19 01:03:31,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 01:03:31,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:03:31,050 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] [2020-08-19 01:03:31,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:03:31,050 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:03:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:03:31,051 INFO L82 PathProgramCache]: Analyzing trace with hash 272490530, now seen corresponding path program 1 times [2020-08-19 01:03:31,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:03:31,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584978490] [2020-08-19 01:03:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:03:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,505 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:03:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:03:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:03:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:03:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:03:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:03:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:03:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 01:03:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:03:31,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584978490] [2020-08-19 01:03:31,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:03:31,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:03:31,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464535687] [2020-08-19 01:03:31,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:03:31,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:03:31,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:03:31,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:03:31,601 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 9 states. [2020-08-19 01:03:31,965 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:03:32,307 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:03:32,542 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:03:32,812 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:03:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:03:34,137 INFO L93 Difference]: Finished difference Result 288 states and 358 transitions. [2020-08-19 01:03:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:03:34,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-19 01:03:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:03:34,142 INFO L225 Difference]: With dead ends: 288 [2020-08-19 01:03:34,142 INFO L226 Difference]: Without dead ends: 173 [2020-08-19 01:03:34,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:03:34,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-19 01:03:34,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 143. [2020-08-19 01:03:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-19 01:03:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2020-08-19 01:03:34,189 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 64 [2020-08-19 01:03:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:03:34,189 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2020-08-19 01:03:34,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:03:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2020-08-19 01:03:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-19 01:03:34,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:03:34,192 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] [2020-08-19 01:03:34,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:03:34,192 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:03:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:03:34,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1080536843, now seen corresponding path program 1 times [2020-08-19 01:03:34,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:03:34,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730555597] [2020-08-19 01:03:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:03:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,478 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:03:34,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:03:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:03:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:03:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:03:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:03:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:03:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 01:03:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 01:03:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:03:34,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730555597] [2020-08-19 01:03:34,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:03:34,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:03:34,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126674988] [2020-08-19 01:03:34,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:03:34,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:03:34,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:03:34,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:03:34,581 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand 7 states. [2020-08-19 01:03:34,919 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:03:36,524 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:37,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:03:37,084 INFO L93 Difference]: Finished difference Result 433 states and 561 transitions. [2020-08-19 01:03:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:03:37,085 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-19 01:03:37,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:03:37,089 INFO L225 Difference]: With dead ends: 433 [2020-08-19 01:03:37,090 INFO L226 Difference]: Without dead ends: 318 [2020-08-19 01:03:37,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:03:37,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-08-19 01:03:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 257. [2020-08-19 01:03:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-19 01:03:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 306 transitions. [2020-08-19 01:03:37,156 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 306 transitions. Word has length 77 [2020-08-19 01:03:37,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:03:37,157 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 306 transitions. [2020-08-19 01:03:37,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:03:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 306 transitions. [2020-08-19 01:03:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-19 01:03:37,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:03:37,159 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] [2020-08-19 01:03:37,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:03:37,159 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:03:37,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:03:37,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1912690952, now seen corresponding path program 1 times [2020-08-19 01:03:37,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:03:37,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176621982] [2020-08-19 01:03:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:03:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,485 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:03:37,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:03:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:03:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:03:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:03:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:03:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:03:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:03:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 01:03:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 01:03:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:03:37,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176621982] [2020-08-19 01:03:37,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:03:37,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:03:37,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561264340] [2020-08-19 01:03:37,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:03:37,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:03:37,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:03:37,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:03:37,626 INFO L87 Difference]: Start difference. First operand 257 states and 306 transitions. Second operand 9 states. [2020-08-19 01:03:37,980 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:03:38,565 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:03:39,499 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:03:39,779 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:40,179 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:03:40,418 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:03:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:03:41,003 INFO L93 Difference]: Finished difference Result 536 states and 678 transitions. [2020-08-19 01:03:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:03:41,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-19 01:03:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:03:41,008 INFO L225 Difference]: With dead ends: 536 [2020-08-19 01:03:41,008 INFO L226 Difference]: Without dead ends: 307 [2020-08-19 01:03:41,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:03:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-08-19 01:03:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 256. [2020-08-19 01:03:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-08-19 01:03:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 303 transitions. [2020-08-19 01:03:41,072 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 303 transitions. Word has length 91 [2020-08-19 01:03:41,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:03:41,073 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 303 transitions. [2020-08-19 01:03:41,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:03:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 303 transitions. [2020-08-19 01:03:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 01:03:41,075 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:03:41,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:03:41,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:03:41,076 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:03:41,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:03:41,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1692072858, now seen corresponding path program 1 times [2020-08-19 01:03:41,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:03:41,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485670236] [2020-08-19 01:03:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:03:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,340 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:03:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:03:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:03:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:03:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:03:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:03:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:03:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:03:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 01:03:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 01:03:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:03:41,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485670236] [2020-08-19 01:03:41,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:03:41,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:03:41,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158036406] [2020-08-19 01:03:41,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:03:41,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:03:41,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:03:41,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:03:41,556 INFO L87 Difference]: Start difference. First operand 256 states and 303 transitions. Second operand 10 states. [2020-08-19 01:03:42,155 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:42,742 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:42,970 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:03:43,243 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:43,496 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:03:44,299 INFO L93 Difference]: Finished difference Result 498 states and 618 transitions. [2020-08-19 01:03:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:03:44,300 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-19 01:03:44,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:03:44,303 INFO L225 Difference]: With dead ends: 498 [2020-08-19 01:03:44,303 INFO L226 Difference]: Without dead ends: 270 [2020-08-19 01:03:44,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:03:44,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-19 01:03:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 231. [2020-08-19 01:03:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-19 01:03:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2020-08-19 01:03:44,347 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 103 [2020-08-19 01:03:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:03:44,348 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2020-08-19 01:03:44,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:03:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2020-08-19 01:03:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 01:03:44,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:03:44,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:03:44,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:03:44,350 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:03:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:03:44,351 INFO L82 PathProgramCache]: Analyzing trace with hash 304023506, now seen corresponding path program 1 times [2020-08-19 01:03:44,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:03:44,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818338101] [2020-08-19 01:03:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:03:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,616 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:03:44,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:03:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:03:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:03:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:03:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:03:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:03:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:03:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 01:03:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 01:03:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:03:44,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818338101] [2020-08-19 01:03:44,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:03:44,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:03:44,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782480043] [2020-08-19 01:03:44,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:03:44,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:03:44,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:03:44,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:03:44,794 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand 11 states. [2020-08-19 01:03:45,258 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:45,496 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:45,730 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:46,428 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:46,702 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:46,977 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:03:47,855 INFO L93 Difference]: Finished difference Result 478 states and 578 transitions. [2020-08-19 01:03:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:03:47,856 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-19 01:03:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:03:47,858 INFO L225 Difference]: With dead ends: 478 [2020-08-19 01:03:47,859 INFO L226 Difference]: Without dead ends: 275 [2020-08-19 01:03:47,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:03:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-19 01:03:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 235. [2020-08-19 01:03:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-19 01:03:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 265 transitions. [2020-08-19 01:03:47,899 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 265 transitions. Word has length 107 [2020-08-19 01:03:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:03:47,900 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 265 transitions. [2020-08-19 01:03:47,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:03:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 265 transitions. [2020-08-19 01:03:47,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 01:03:47,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:03:47,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:03:47,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:03:47,902 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:03:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:03:47,902 INFO L82 PathProgramCache]: Analyzing trace with hash 63483377, now seen corresponding path program 1 times [2020-08-19 01:03:47,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:03:47,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282779596] [2020-08-19 01:03:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:03:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,175 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:03:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:03:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:03:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:03:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:03:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:03:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:03:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:03:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 01:03:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 01:03:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:03:48,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282779596] [2020-08-19 01:03:48,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:03:48,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:03:48,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405172007] [2020-08-19 01:03:48,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:03:48,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:03:48,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:03:48,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:03:48,371 INFO L87 Difference]: Start difference. First operand 235 states and 265 transitions. Second operand 7 states. [2020-08-19 01:03:48,726 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:03:49,242 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:03:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:03:51,029 INFO L93 Difference]: Finished difference Result 647 states and 802 transitions. [2020-08-19 01:03:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:03:51,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-08-19 01:03:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:03:51,033 INFO L225 Difference]: With dead ends: 647 [2020-08-19 01:03:51,033 INFO L226 Difference]: Without dead ends: 440 [2020-08-19 01:03:51,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:03:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-08-19 01:03:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 402. [2020-08-19 01:03:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-08-19 01:03:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 469 transitions. [2020-08-19 01:03:51,110 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 469 transitions. Word has length 107 [2020-08-19 01:03:51,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:03:51,111 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 469 transitions. [2020-08-19 01:03:51,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:03:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 469 transitions. [2020-08-19 01:03:51,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-19 01:03:51,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:03:51,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:03:51,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:03:51,113 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:03:51,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:03:51,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1148604343, now seen corresponding path program 1 times [2020-08-19 01:03:51,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:03:51,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507482869] [2020-08-19 01:03:51,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:03:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,442 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:03:51,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:03:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:03:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:03:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:03:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:03:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:03:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:03:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:03:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 01:03:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 01:03:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:03:51,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507482869] [2020-08-19 01:03:51,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:03:51,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:03:51,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074328790] [2020-08-19 01:03:51,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:03:51,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:03:51,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:03:51,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:03:51,651 INFO L87 Difference]: Start difference. First operand 402 states and 469 transitions. Second operand 12 states. [2020-08-19 01:03:52,086 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:03:52,764 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:03:53,709 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:03:54,005 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:03:54,263 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:03:54,560 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:03:54,839 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:03:56,106 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:03:56,373 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:03:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:03:57,190 INFO L93 Difference]: Finished difference Result 1110 states and 1376 transitions. [2020-08-19 01:03:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 01:03:57,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-19 01:03:57,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:03:57,199 INFO L225 Difference]: With dead ends: 1110 [2020-08-19 01:03:57,199 INFO L226 Difference]: Without dead ends: 806 [2020-08-19 01:03:57,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 01:03:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-08-19 01:03:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 696. [2020-08-19 01:03:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-19 01:03:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 804 transitions. [2020-08-19 01:03:57,384 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 804 transitions. Word has length 111 [2020-08-19 01:03:57,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:03:57,386 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 804 transitions. [2020-08-19 01:03:57,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:03:57,386 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 804 transitions. [2020-08-19 01:03:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-19 01:03:57,390 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:03:57,391 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:03:57,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:03:57,391 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:03:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:03:57,392 INFO L82 PathProgramCache]: Analyzing trace with hash 490171745, now seen corresponding path program 1 times [2020-08-19 01:03:57,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:03:57,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702470644] [2020-08-19 01:03:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:03:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,723 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:03:57,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:03:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:03:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:03:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:03:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:03:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:03:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:03:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:03:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:03:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:03:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-19 01:03:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:58,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:03:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:58,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 01:03:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:58,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 01:03:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:58,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:03:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:58,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:03:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:58,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:03:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-19 01:03:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:58,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-19 01:03:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:03:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-19 01:03:58,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702470644] [2020-08-19 01:03:58,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:03:58,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:03:58,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786670085] [2020-08-19 01:03:58,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:03:58,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:03:58,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:03:58,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:03:58,162 INFO L87 Difference]: Start difference. First operand 696 states and 804 transitions. Second operand 16 states. [2020-08-19 01:03:58,948 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:03:59,354 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:03:59,623 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:03:59,879 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:04:00,544 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-19 01:04:00,829 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 01:04:01,248 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-19 01:04:02,055 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 01:04:02,717 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:03,163 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 01:04:03,802 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-19 01:04:04,281 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-19 01:04:04,587 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:05,146 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:05,555 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 01:04:06,182 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-19 01:04:06,880 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:04:07,415 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-19 01:04:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:08,080 INFO L93 Difference]: Finished difference Result 1505 states and 1795 transitions. [2020-08-19 01:04:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-19 01:04:08,080 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 170 [2020-08-19 01:04:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:08,086 INFO L225 Difference]: With dead ends: 1505 [2020-08-19 01:04:08,086 INFO L226 Difference]: Without dead ends: 903 [2020-08-19 01:04:08,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 01:04:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-08-19 01:04:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 824. [2020-08-19 01:04:08,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2020-08-19 01:04:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 962 transitions. [2020-08-19 01:04:08,245 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 962 transitions. Word has length 170 [2020-08-19 01:04:08,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:08,246 INFO L479 AbstractCegarLoop]: Abstraction has 824 states and 962 transitions. [2020-08-19 01:04:08,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:04:08,246 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 962 transitions. [2020-08-19 01:04:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-08-19 01:04:08,252 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:08,252 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:04:08,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:04:08,253 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:08,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1064646135, now seen corresponding path program 1 times [2020-08-19 01:04:08,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:08,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228636485] [2020-08-19 01:04:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,581 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:08,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:04:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:04:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:04:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:04:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:04:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-19 01:04:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:04:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:04:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 01:04:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 01:04:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 01:04:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-19 01:04:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-08-19 01:04:09,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228636485] [2020-08-19 01:04:09,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:04:09,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:04:09,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754395195] [2020-08-19 01:04:09,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:04:09,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:09,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:04:09,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:04:09,078 INFO L87 Difference]: Start difference. First operand 824 states and 962 transitions. Second operand 15 states. [2020-08-19 01:04:10,387 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:10,652 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:10,896 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:11,164 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:12,430 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:13,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:13,485 INFO L93 Difference]: Finished difference Result 2172 states and 2641 transitions. [2020-08-19 01:04:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:04:13,489 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 299 [2020-08-19 01:04:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:13,497 INFO L225 Difference]: With dead ends: 2172 [2020-08-19 01:04:13,497 INFO L226 Difference]: Without dead ends: 1289 [2020-08-19 01:04:13,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-19 01:04:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-08-19 01:04:13,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1086. [2020-08-19 01:04:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1086 states. [2020-08-19 01:04:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1299 transitions. [2020-08-19 01:04:13,746 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1299 transitions. Word has length 299 [2020-08-19 01:04:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:13,748 INFO L479 AbstractCegarLoop]: Abstraction has 1086 states and 1299 transitions. [2020-08-19 01:04:13,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:04:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1299 transitions. [2020-08-19 01:04:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-19 01:04:13,759 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:13,760 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:04:13,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:04:13,761 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:13,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:13,761 INFO L82 PathProgramCache]: Analyzing trace with hash -140233560, now seen corresponding path program 1 times [2020-08-19 01:04:13,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:13,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033007543] [2020-08-19 01:04:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,087 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:14,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:04:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:04:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:04:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:04:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:04:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:04:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-19 01:04:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:04:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:04:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-19 01:04:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 01:04:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-19 01:04:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-19 01:04:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-19 01:04:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 86 proven. 38 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-08-19 01:04:14,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033007543] [2020-08-19 01:04:14,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:04:14,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:04:14,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183149997] [2020-08-19 01:04:14,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:04:14,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:14,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:04:14,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:04:14,509 INFO L87 Difference]: Start difference. First operand 1086 states and 1299 transitions. Second operand 16 states. [2020-08-19 01:04:14,948 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:15,308 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:15,577 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:15,827 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:16,466 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:17,388 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:17,636 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:18,150 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:18,692 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:19,451 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:19,700 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:20,259 INFO L93 Difference]: Finished difference Result 2062 states and 2501 transitions. [2020-08-19 01:04:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 01:04:20,259 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 309 [2020-08-19 01:04:20,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:20,272 INFO L225 Difference]: With dead ends: 2062 [2020-08-19 01:04:20,272 INFO L226 Difference]: Without dead ends: 1089 [2020-08-19 01:04:20,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 01:04:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-08-19 01:04:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1046. [2020-08-19 01:04:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-08-19 01:04:20,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1233 transitions. [2020-08-19 01:04:20,515 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1233 transitions. Word has length 309 [2020-08-19 01:04:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:20,516 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1233 transitions. [2020-08-19 01:04:20,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:04:20,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1233 transitions. [2020-08-19 01:04:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-08-19 01:04:20,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:20,530 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:04:20,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:04:20,531 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:20,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:20,531 INFO L82 PathProgramCache]: Analyzing trace with hash 927464560, now seen corresponding path program 1 times [2020-08-19 01:04:20,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:20,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695271914] [2020-08-19 01:04:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,868 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:04:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:04:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:04:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:04:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:04:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:04:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-08-19 01:04:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:04:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:04:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-08-19 01:04:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 01:04:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 01:04:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-19 01:04:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 78 proven. 21 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-08-19 01:04:21,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695271914] [2020-08-19 01:04:21,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:04:21,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:04:21,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283315840] [2020-08-19 01:04:21,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:04:21,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:21,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:04:21,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:04:21,285 INFO L87 Difference]: Start difference. First operand 1046 states and 1233 transitions. Second operand 16 states. [2020-08-19 01:04:21,736 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:22,493 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:23,513 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:23,852 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:24,160 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:24,454 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:24,777 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:25,072 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 192