/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:30:20,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:30:20,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:30:20,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:30:20,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:30:20,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:30:20,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:30:20,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:30:20,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:30:20,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:30:20,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:30:20,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:30:20,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:30:20,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:30:20,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:30:20,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:30:20,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:30:20,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:30:20,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:30:20,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:30:20,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:30:20,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:30:20,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:30:20,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:30:20,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:30:20,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:30:20,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:30:20,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:30:20,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:30:20,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:30:20,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:30:20,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:30:20,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:30:20,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:30:20,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:30:20,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:30:20,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:30:20,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:30:20,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:30:20,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:30:20,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:30:20,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:30:20,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:30:20,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:30:20,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:30:20,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:30:20,508 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:30:20,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:30:20,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:30:20,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:30:20,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:30:20,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:30:20,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:30:20,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:30:20,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:30:20,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:30:20,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:30:20,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:30:20,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:30:20,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:30:20,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:30:20,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:30:20,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:30:20,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:30:20,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:30:20,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:30:20,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:30:20,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:30:20,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:30:20,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:30:20,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:30:20,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:30:20,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:30:20,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:30:20,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:30:20,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:30:20,829 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:30:20,830 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-21 15:30:20,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8b164dd9/12fd56cda6904516bb80a8bf2ae5d185/FLAG633b29de3 [2020-08-21 15:30:21,456 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:30:21,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-21 15:30:21,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8b164dd9/12fd56cda6904516bb80a8bf2ae5d185/FLAG633b29de3 [2020-08-21 15:30:21,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8b164dd9/12fd56cda6904516bb80a8bf2ae5d185 [2020-08-21 15:30:21,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:30:21,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:30:21,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:30:21,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:30:21,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:30:21,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:30:21" (1/1) ... [2020-08-21 15:30:21,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d2a1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:21, skipping insertion in model container [2020-08-21 15:30:21,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:30:21" (1/1) ... [2020-08-21 15:30:21,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:30:21,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:30:22,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:30:22,414 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:30:22,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:30:22,525 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:30:22,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:22 WrapperNode [2020-08-21 15:30:22,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:30:22,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:30:22,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:30:22,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:30:22,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:22" (1/1) ... [2020-08-21 15:30:22,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:22" (1/1) ... [2020-08-21 15:30:22,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:22" (1/1) ... [2020-08-21 15:30:22,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:22" (1/1) ... [2020-08-21 15:30:22,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:22" (1/1) ... [2020-08-21 15:30:22,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:22" (1/1) ... [2020-08-21 15:30:22,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:22" (1/1) ... [2020-08-21 15:30:22,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:30:22,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:30:22,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:30:22,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:30:22,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:30:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:30:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:30:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:30:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:30:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:30:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:30:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:30:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:30:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:30:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:30:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:30:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:30:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:30:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:30:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 15:30:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:30:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 15:30:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:30:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:30:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:30:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:30:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:30:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:30:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:30:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:30:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 15:30:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:30:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 15:30:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:30:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:30:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:30:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:30:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:30:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:30:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 15:30:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:30:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:30:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:30:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:30:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:30:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:30:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:30:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:30:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:30:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:30:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:30:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:30:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:30:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:30:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:30:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:30:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:30:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:30:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:30:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:30:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:30:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 15:30:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:30:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:30:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:30:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 15:30:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:30:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:30:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:30:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:30:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:30:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:30:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:30:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:30:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:30:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:30:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:30:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:30:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:30:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:30:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 15:30:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 15:30:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:30:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 15:30:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:30:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:30:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:30:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:30:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:30:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:30:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:30:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:30:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:30:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:30:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:30:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:30:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:30:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:30:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:30:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:30:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:30:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:30:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:30:23,820 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:30:23,820 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:30:23,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:30:23 BoogieIcfgContainer [2020-08-21 15:30:23,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:30:23,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:30:23,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:30:23,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:30:23,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:30:21" (1/3) ... [2020-08-21 15:30:23,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474f6bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:30:23, skipping insertion in model container [2020-08-21 15:30:23,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:30:22" (2/3) ... [2020-08-21 15:30:23,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474f6bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:30:23, skipping insertion in model container [2020-08-21 15:30:23,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:30:23" (3/3) ... [2020-08-21 15:30:23,840 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product61.cil.c [2020-08-21 15:30:23,851 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:30:23,860 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:30:23,875 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:30:23,908 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:30:23,908 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:30:23,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:30:23,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:30:23,909 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:30:23,910 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:30:23,910 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:30:23,910 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:30:23,937 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2020-08-21 15:30:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 15:30:23,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:23,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:30:23,954 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:23,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:23,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1301923028, now seen corresponding path program 1 times [2020-08-21 15:30:23,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:23,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239073907] [2020-08-21 15:30:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:24,645 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:24,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:24,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:24,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:24,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:24,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:30:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:24,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:30:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:30:24,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239073907] [2020-08-21 15:30:24,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:24,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:30:24,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497074405] [2020-08-21 15:30:24,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:30:24,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:24,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:30:24,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:30:24,845 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2020-08-21 15:30:26,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:26,112 INFO L93 Difference]: Finished difference Result 345 states and 451 transitions. [2020-08-21 15:30:26,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:30:26,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 15:30:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:26,129 INFO L225 Difference]: With dead ends: 345 [2020-08-21 15:30:26,129 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 15:30:26,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:30:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 15:30:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-21 15:30:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-21 15:30:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2020-08-21 15:30:26,231 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 46 [2020-08-21 15:30:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:26,232 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2020-08-21 15:30:26,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:30:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2020-08-21 15:30:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 15:30:26,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:26,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:30:26,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:30:26,236 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:26,237 INFO L82 PathProgramCache]: Analyzing trace with hash -216566915, now seen corresponding path program 1 times [2020-08-21 15:30:26,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:26,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361143655] [2020-08-21 15:30:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:26,545 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:26,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:26,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:26,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:26,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:26,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:26,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:30:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:30:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:30:26,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361143655] [2020-08-21 15:30:26,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:26,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:30:26,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111279356] [2020-08-21 15:30:26,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:30:26,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:26,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:30:26,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:30:26,615 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 4 states. [2020-08-21 15:30:27,050 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:27,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:27,998 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2020-08-21 15:30:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:30:27,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 15:30:28,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:28,003 INFO L225 Difference]: With dead ends: 278 [2020-08-21 15:30:28,003 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 15:30:28,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:30:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 15:30:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-21 15:30:28,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-21 15:30:28,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2020-08-21 15:30:28,044 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 47 [2020-08-21 15:30:28,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:28,045 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2020-08-21 15:30:28,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:30:28,045 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2020-08-21 15:30:28,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 15:30:28,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:28,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:30:28,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:30:28,048 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:28,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:28,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1163721234, now seen corresponding path program 1 times [2020-08-21 15:30:28,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:28,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067620399] [2020-08-21 15:30:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:28,380 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:28,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:28,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:28,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:28,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:28,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:30:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:30:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:30:28,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067620399] [2020-08-21 15:30:28,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:28,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:30:28,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400667088] [2020-08-21 15:30:28,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:30:28,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:28,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:30:28,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:30:28,486 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand 8 states. [2020-08-21 15:30:28,931 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:29,271 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:30:29,518 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:30:29,734 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:30:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:31,020 INFO L93 Difference]: Finished difference Result 287 states and 356 transitions. [2020-08-21 15:30:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:30:31,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 15:30:31,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:31,027 INFO L225 Difference]: With dead ends: 287 [2020-08-21 15:30:31,028 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 15:30:31,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:30:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 15:30:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-21 15:30:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-21 15:30:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2020-08-21 15:30:31,068 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 51 [2020-08-21 15:30:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:31,068 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2020-08-21 15:30:31,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:30:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2020-08-21 15:30:31,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 15:30:31,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:31,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:30:31,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:30:31,072 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:31,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:31,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1315506319, now seen corresponding path program 1 times [2020-08-21 15:30:31,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:31,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385166077] [2020-08-21 15:30:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,381 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 15:30:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 15:30:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 15:30:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:30:31,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385166077] [2020-08-21 15:30:31,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:31,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:30:31,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51350075] [2020-08-21 15:30:31,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:30:31,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:31,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:30:31,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:30:31,489 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 6 states. [2020-08-21 15:30:31,776 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:32,866 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:33,561 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2020-08-21 15:30:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:30:33,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-21 15:30:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:33,568 INFO L225 Difference]: With dead ends: 390 [2020-08-21 15:30:33,568 INFO L226 Difference]: Without dead ends: 273 [2020-08-21 15:30:33,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:30:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-21 15:30:33,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 232. [2020-08-21 15:30:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-21 15:30:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 264 transitions. [2020-08-21 15:30:33,625 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 264 transitions. Word has length 69 [2020-08-21 15:30:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:33,625 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 264 transitions. [2020-08-21 15:30:33,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:30:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 264 transitions. [2020-08-21 15:30:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 15:30:33,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:33,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:30:33,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:30:33,628 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:33,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:33,628 INFO L82 PathProgramCache]: Analyzing trace with hash -921409892, now seen corresponding path program 1 times [2020-08-21 15:30:33,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:33,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244331088] [2020-08-21 15:30:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,043 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:34,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 15:30:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:30:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 15:30:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 15:30:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:30:34,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244331088] [2020-08-21 15:30:34,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:34,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:30:34,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023286791] [2020-08-21 15:30:34,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:30:34,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:34,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:30:34,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:30:34,190 INFO L87 Difference]: Start difference. First operand 232 states and 264 transitions. Second operand 8 states. [2020-08-21 15:30:34,722 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:35,652 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:30:36,013 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:36,598 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:30:36,837 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:30:37,091 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:38,271 INFO L93 Difference]: Finished difference Result 691 states and 842 transitions. [2020-08-21 15:30:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:30:38,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-21 15:30:38,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:38,278 INFO L225 Difference]: With dead ends: 691 [2020-08-21 15:30:38,278 INFO L226 Difference]: Without dead ends: 483 [2020-08-21 15:30:38,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:30:38,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-21 15:30:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 419. [2020-08-21 15:30:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-21 15:30:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 478 transitions. [2020-08-21 15:30:38,374 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 478 transitions. Word has length 83 [2020-08-21 15:30:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:38,374 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 478 transitions. [2020-08-21 15:30:38,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:30:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 478 transitions. [2020-08-21 15:30:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 15:30:38,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:38,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:30:38,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:30:38,377 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:38,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:38,377 INFO L82 PathProgramCache]: Analyzing trace with hash 592685792, now seen corresponding path program 1 times [2020-08-21 15:30:38,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:38,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7528753] [2020-08-21 15:30:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,657 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:38,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:30:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:30:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:30:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 15:30:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 15:30:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:30:38,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7528753] [2020-08-21 15:30:38,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:38,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:30:38,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353547634] [2020-08-21 15:30:38,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:30:38,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:38,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:30:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:30:38,770 INFO L87 Difference]: Start difference. First operand 419 states and 478 transitions. Second operand 9 states. [2020-08-21 15:30:39,286 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:40,407 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:40,678 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:41,770 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:30:42,038 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:30:42,269 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:30:42,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:42,590 INFO L93 Difference]: Finished difference Result 522 states and 646 transitions. [2020-08-21 15:30:42,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:30:42,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-21 15:30:42,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:42,595 INFO L225 Difference]: With dead ends: 522 [2020-08-21 15:30:42,595 INFO L226 Difference]: Without dead ends: 519 [2020-08-21 15:30:42,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:30:42,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-08-21 15:30:42,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 419. [2020-08-21 15:30:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-21 15:30:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 477 transitions. [2020-08-21 15:30:42,685 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 477 transitions. Word has length 87 [2020-08-21 15:30:42,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:42,685 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 477 transitions. [2020-08-21 15:30:42,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:30:42,686 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 477 transitions. [2020-08-21 15:30:42,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 15:30:42,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:42,688 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] [2020-08-21 15:30:42,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:30:42,688 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash -88143431, now seen corresponding path program 1 times [2020-08-21 15:30:42,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:42,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632160739] [2020-08-21 15:30:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:42,973 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:42,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:42,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:42,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:30:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:30:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:30:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:30:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 15:30:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:30:43,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632160739] [2020-08-21 15:30:43,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:43,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:30:43,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312430693] [2020-08-21 15:30:43,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:30:43,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:43,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:30:43,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:30:43,164 INFO L87 Difference]: Start difference. First operand 419 states and 477 transitions. Second operand 9 states. [2020-08-21 15:30:44,168 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:44,402 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:44,645 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:44,882 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:46,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:46,116 INFO L93 Difference]: Finished difference Result 922 states and 1136 transitions. [2020-08-21 15:30:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:30:46,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-08-21 15:30:46,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:46,127 INFO L225 Difference]: With dead ends: 922 [2020-08-21 15:30:46,127 INFO L226 Difference]: Without dead ends: 527 [2020-08-21 15:30:46,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:30:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-08-21 15:30:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 429. [2020-08-21 15:30:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-08-21 15:30:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 487 transitions. [2020-08-21 15:30:46,208 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 487 transitions. Word has length 103 [2020-08-21 15:30:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:46,208 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 487 transitions. [2020-08-21 15:30:46,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:30:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 487 transitions. [2020-08-21 15:30:46,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 15:30:46,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:46,211 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] [2020-08-21 15:30:46,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:30:46,211 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:46,212 INFO L82 PathProgramCache]: Analyzing trace with hash -441231813, now seen corresponding path program 1 times [2020-08-21 15:30:46,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:46,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422977418] [2020-08-21 15:30:46,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,452 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:30:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:30:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:30:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:30:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 15:30:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:30:46,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422977418] [2020-08-21 15:30:46,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:46,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 15:30:46,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597605985] [2020-08-21 15:30:46,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:30:46,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:46,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:30:46,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:30:46,631 INFO L87 Difference]: Start difference. First operand 429 states and 487 transitions. Second operand 11 states. [2020-08-21 15:30:47,491 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:30:47,735 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:47,964 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:48,555 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:48,800 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:49,029 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:50,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:50,402 INFO L93 Difference]: Finished difference Result 942 states and 1158 transitions. [2020-08-21 15:30:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:30:50,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-08-21 15:30:50,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:50,406 INFO L225 Difference]: With dead ends: 942 [2020-08-21 15:30:50,406 INFO L226 Difference]: Without dead ends: 537 [2020-08-21 15:30:50,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:30:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-08-21 15:30:50,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 437. [2020-08-21 15:30:50,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-21 15:30:50,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 495 transitions. [2020-08-21 15:30:50,484 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 495 transitions. Word has length 103 [2020-08-21 15:30:50,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:50,485 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 495 transitions. [2020-08-21 15:30:50,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:30:50,485 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 495 transitions. [2020-08-21 15:30:50,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 15:30:50,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:50,487 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] [2020-08-21 15:30:50,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:30:50,488 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:50,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:50,488 INFO L82 PathProgramCache]: Analyzing trace with hash 691958780, now seen corresponding path program 1 times [2020-08-21 15:30:50,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:50,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814113393] [2020-08-21 15:30:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,726 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:30:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:30:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:30:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:30:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 15:30:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:30:50,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814113393] [2020-08-21 15:30:50,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:50,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:30:50,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010871825] [2020-08-21 15:30:50,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:30:50,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:50,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:30:50,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:30:50,874 INFO L87 Difference]: Start difference. First operand 437 states and 495 transitions. Second operand 7 states. [2020-08-21 15:30:51,332 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:51,817 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:54,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:54,096 INFO L93 Difference]: Finished difference Result 1265 states and 1606 transitions. [2020-08-21 15:30:54,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 15:30:54,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-08-21 15:30:54,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:54,102 INFO L225 Difference]: With dead ends: 1265 [2020-08-21 15:30:54,102 INFO L226 Difference]: Without dead ends: 852 [2020-08-21 15:30:54,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:30:54,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-08-21 15:30:54,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 753. [2020-08-21 15:30:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-08-21 15:30:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 889 transitions. [2020-08-21 15:30:54,273 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 889 transitions. Word has length 103 [2020-08-21 15:30:54,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:54,274 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 889 transitions. [2020-08-21 15:30:54,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:30:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 889 transitions. [2020-08-21 15:30:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 15:30:54,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:54,279 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] [2020-08-21 15:30:54,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:30:54,280 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:54,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:54,280 INFO L82 PathProgramCache]: Analyzing trace with hash -867723262, now seen corresponding path program 1 times [2020-08-21 15:30:54,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:54,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735613022] [2020-08-21 15:30:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,578 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:30:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:30:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:30:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:30:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 15:30:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 15:30:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 15:30:54,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735613022] [2020-08-21 15:30:54,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:30:54,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 15:30:54,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280502674] [2020-08-21 15:30:54,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 15:30:54,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:54,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 15:30:54,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 15:30:54,939 INFO L87 Difference]: Start difference. First operand 753 states and 889 transitions. Second operand 17 states. [2020-08-21 15:30:55,540 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:55,858 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:30:56,117 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:56,360 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:56,944 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:57,920 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:58,242 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:58,514 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:58,787 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:59,126 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:59,433 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:59,981 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 15:31:00,535 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 15:31:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:31:02,896 INFO L93 Difference]: Finished difference Result 1548 states and 1897 transitions. [2020-08-21 15:31:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 15:31:02,896 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-08-21 15:31:02,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:31:02,903 INFO L225 Difference]: With dead ends: 1548 [2020-08-21 15:31:02,903 INFO L226 Difference]: Without dead ends: 819 [2020-08-21 15:31:02,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 15:31:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-21 15:31:03,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 723. [2020-08-21 15:31:03,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-08-21 15:31:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 840 transitions. [2020-08-21 15:31:03,031 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 840 transitions. Word has length 107 [2020-08-21 15:31:03,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:31:03,031 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 840 transitions. [2020-08-21 15:31:03,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 15:31:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 840 transitions. [2020-08-21 15:31:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-21 15:31:03,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:31:03,034 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:31:03,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:31:03,035 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:31:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:31:03,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1713415852, now seen corresponding path program 1 times [2020-08-21 15:31:03,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:31:03,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287467586] [2020-08-21 15:31:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:31:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,328 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:31:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:31:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:31:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:31:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:31:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:31:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:31:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:31:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:31:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:31:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:31:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:31:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:31:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:31:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:31:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:31:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:31:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:31:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:31:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 15:31:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 15:31:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 15:31:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:31:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:31:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:31:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:31:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:31:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:31:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:31:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-21 15:31:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-21 15:31:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:31:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 15:31:03,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287467586] [2020-08-21 15:31:03,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:31:03,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 15:31:03,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340175464] [2020-08-21 15:31:03,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 15:31:03,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:31:03,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 15:31:03,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:31:03,646 INFO L87 Difference]: Start difference. First operand 723 states and 840 transitions. Second operand 18 states. [2020-08-21 15:31:04,444 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:31:04,813 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:31:05,082 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:31:05,320 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:31:05,896 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:31:06,845 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:31:07,148 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:31:07,421 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:31:07,677 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:31:07,983 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:31:08,255 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:31:09,374 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:31:09,625 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:31:09,914 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:31:10,183 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:31:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:31:11,177 INFO L93 Difference]: Finished difference Result 1309 states and 1611 transitions. [2020-08-21 15:31:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 15:31:11,178 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 176 [2020-08-21 15:31:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:31:11,179 INFO L225 Difference]: With dead ends: 1309 [2020-08-21 15:31:11,179 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 15:31:11,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=347, Invalid=1633, Unknown=0, NotChecked=0, Total=1980 [2020-08-21 15:31:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 15:31:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 15:31:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 15:31:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 15:31:11,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-21 15:31:11,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:31:11,184 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 15:31:11,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 15:31:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 15:31:11,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 15:31:11,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:31:11,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 15:31:12,172 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-21 15:31:12,490 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-21 15:31:12,612 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-21 15:31:12,774 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-21 15:31:14,292 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-21 15:31:16,128 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-21 15:31:17,369 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 243 [2020-08-21 15:31:17,859 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-21 15:31:18,968 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-21 15:31:19,126 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-21 15:31:19,293 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-21 15:31:19,502 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 19 [2020-08-21 15:31:19,680 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-21 15:31:19,891 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 22