/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=DEEPEST --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_spec4_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:26:30,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:26:30,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:26:30,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:26:30,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:26:30,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:26:30,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:26:30,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:26:30,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:26:30,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:26:30,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:26:30,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:26:30,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:26:30,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:26:30,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:26:30,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:26:30,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:26:30,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:26:30,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:26:30,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:26:30,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:26:30,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:26:30,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:26:30,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:26:30,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:26:30,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:26:30,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:26:30,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:26:30,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:26:30,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:26:30,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:26:30,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:26:30,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:26:30,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:26:30,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:26:30,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:26:30,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:26:30,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:26:30,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:26:30,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:26:30,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:26:30,556 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 20:26:30,596 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:26:30,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:26:30,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:26:30,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:26:30,599 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:26:30,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:26:30,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:26:30,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:26:30,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:26:30,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:26:30,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:26:30,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:26:30,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:26:30,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:26:30,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:26:30,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:26:30,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:26:30,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:26:30,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:26:30,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:26:30,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:26:30,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:26:30,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:26:30,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:26:30,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:26:30,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:26:30,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:26:30,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:26:30,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:26:30,606 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:26:30,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:26:30,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:26:30,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:26:30,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:26:30,968 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:26:30,968 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-21 20:26:31,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c00d763/7ed89f95698e4bd9862329dffc65dc89/FLAG0efac7da8 [2020-08-21 20:26:31,569 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:26:31,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-21 20:26:31,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c00d763/7ed89f95698e4bd9862329dffc65dc89/FLAG0efac7da8 [2020-08-21 20:26:31,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c00d763/7ed89f95698e4bd9862329dffc65dc89 [2020-08-21 20:26:31,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:26:31,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:26:31,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:26:31,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:26:31,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:26:31,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:26:31" (1/1) ... [2020-08-21 20:26:31,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:31, skipping insertion in model container [2020-08-21 20:26:31,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:26:31" (1/1) ... [2020-08-21 20:26:31,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:26:31,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:26:32,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:26:32,337 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:26:32,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:26:32,626 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:26:32,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:32 WrapperNode [2020-08-21 20:26:32,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:26:32,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:26:32,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:26:32,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:26:32,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:32" (1/1) ... [2020-08-21 20:26:32,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:32" (1/1) ... [2020-08-21 20:26:32,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:32" (1/1) ... [2020-08-21 20:26:32,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:32" (1/1) ... [2020-08-21 20:26:32,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:32" (1/1) ... [2020-08-21 20:26:32,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:32" (1/1) ... [2020-08-21 20:26:32,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:32" (1/1) ... [2020-08-21 20:26:32,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:26:32,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:26:32,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:26:32,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:26:32,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:32" (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 20:26:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:26:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:26:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:26:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:26:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:26:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:26:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:26:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:26:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:26:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:26:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 20:26:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 20:26:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:26:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:26:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:26:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:26:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:26:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:26:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 20:26:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 20:26:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:26:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:26:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:26:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:26:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:26:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:26:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 20:26:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 20:26:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:26:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:26:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:26:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:26:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:26:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 20:26:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:26:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:26:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:26:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:26:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:26:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:26:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:26:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:26:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:26:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:26:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:26:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:26:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:26:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:26:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:26:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:26:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 20:26:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 20:26:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:26:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:26:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:26:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:26:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:26:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:26:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:26:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:26:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:26:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:26:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:26:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:26:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:26:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:26:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:26:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 20:26:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:26:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 20:26:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 20:26:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 20:26:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 20:26:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:26:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:26:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:26:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:26:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:26:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:26:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:26:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:26:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:26:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:26:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:26:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:26:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:26:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:26:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:26:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:26:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:26:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:26:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:26:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:26:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:26:34,073 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:26:34,073 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:26:34,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:26:34 BoogieIcfgContainer [2020-08-21 20:26:34,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:26:34,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:26:34,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:26:34,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:26:34,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:26:31" (1/3) ... [2020-08-21 20:26:34,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f7e431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:26:34, skipping insertion in model container [2020-08-21 20:26:34,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:32" (2/3) ... [2020-08-21 20:26:34,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f7e431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:26:34, skipping insertion in model container [2020-08-21 20:26:34,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:26:34" (3/3) ... [2020-08-21 20:26:34,087 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2020-08-21 20:26:34,098 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:26:34,106 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:26:34,120 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:26:34,145 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:26:34,145 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:26:34,146 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:26:34,146 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:26:34,146 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:26:34,146 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:26:34,146 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:26:34,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:26:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-21 20:26:34,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 20:26:34,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:34,179 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 20:26:34,180 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:34,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:34,186 INFO L82 PathProgramCache]: Analyzing trace with hash 916136138, now seen corresponding path program 1 times [2020-08-21 20:26:34,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:34,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556481281] [2020-08-21 20:26:34,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:34,849 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:34,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:34,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:34,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:34,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:34,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:26:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:34,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:26:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:34,995 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 20:26:34,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556481281] [2020-08-21 20:26:34,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:34,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:26:34,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118227327] [2020-08-21 20:26:35,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:26:35,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:35,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:26:35,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:26:35,027 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2020-08-21 20:26:36,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:36,210 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-21 20:26:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:26:36,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 20:26:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:36,227 INFO L225 Difference]: With dead ends: 297 [2020-08-21 20:26:36,227 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 20:26:36,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:26:36,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 20:26:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-21 20:26:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 20:26:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-21 20:26:36,319 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-21 20:26:36,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:36,320 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-21 20:26:36,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:26:36,320 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-21 20:26:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 20:26:36,323 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:36,324 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 20:26:36,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:26:36,324 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:36,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:36,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1104947330, now seen corresponding path program 1 times [2020-08-21 20:26:36,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:36,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772032386] [2020-08-21 20:26:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,663 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:36,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:26:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:26:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,740 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 20:26:36,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772032386] [2020-08-21 20:26:36,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:36,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:26:36,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573368192] [2020-08-21 20:26:36,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:26:36,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:36,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:26:36,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:26:36,746 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-21 20:26:37,171 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:37,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:37,870 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-21 20:26:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:26:37,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 20:26:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:37,874 INFO L225 Difference]: With dead ends: 230 [2020-08-21 20:26:37,874 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 20:26:37,876 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 20:26:37,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 20:26:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-21 20:26:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 20:26:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-21 20:26:37,931 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-21 20:26:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:37,931 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-21 20:26:37,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:26:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-21 20:26:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 20:26:37,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:37,933 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 20:26:37,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:26:37,934 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:37,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1852359913, now seen corresponding path program 1 times [2020-08-21 20:26:37,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:37,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416341874] [2020-08-21 20:26:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:38,247 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:38,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:38,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:38,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:38,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:38,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:38,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:26:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:38,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:26:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:38,359 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 20:26:38,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416341874] [2020-08-21 20:26:38,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:38,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:26:38,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282856729] [2020-08-21 20:26:38,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:26:38,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:38,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:26:38,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:26:38,362 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-21 20:26:38,747 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:39,057 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:39,286 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:39,508 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:40,564 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-21 20:26:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 20:26:40,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 20:26:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:40,567 INFO L225 Difference]: With dead ends: 239 [2020-08-21 20:26:40,567 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 20:26:40,568 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 20:26:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 20:26:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-21 20:26:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 20:26:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-21 20:26:40,616 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-21 20:26:40,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:40,617 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-21 20:26:40,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:26:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-21 20:26:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 20:26:40,629 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:40,629 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] [2020-08-21 20:26:40,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:26:40,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash 458129541, now seen corresponding path program 1 times [2020-08-21 20:26:40,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:40,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652114111] [2020-08-21 20:26:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:40,924 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:40,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:40,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:40,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:40,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:40,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:41,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 20:26:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:41,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:41,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:26:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 20:26:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:41,039 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 20:26:41,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652114111] [2020-08-21 20:26:41,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:41,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 20:26:41,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585388108] [2020-08-21 20:26:41,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:26:41,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:41,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:26:41,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:26:41,044 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-21 20:26:41,437 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:42,600 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:43,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:43,306 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-21 20:26:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:26:43,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 20:26:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:43,310 INFO L225 Difference]: With dead ends: 331 [2020-08-21 20:26:43,310 INFO L226 Difference]: Without dead ends: 236 [2020-08-21 20:26:43,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 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 20:26:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-21 20:26:43,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-21 20:26:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-21 20:26:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-21 20:26:43,364 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-21 20:26:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:43,365 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-21 20:26:43,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:26:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-21 20:26:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 20:26:43,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:43,366 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] [2020-08-21 20:26:43,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:26:43,367 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:43,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:43,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1170867649, now seen corresponding path program 1 times [2020-08-21 20:26:43,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:43,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963208926] [2020-08-21 20:26:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,657 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 20:26:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:26:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 20:26:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 20:26:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:43,795 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 20:26:43,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963208926] [2020-08-21 20:26:43,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:43,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 20:26:43,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735011074] [2020-08-21 20:26:43,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:26:43,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:43,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:26:43,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:26:43,798 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 12 states. [2020-08-21 20:26:44,239 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:44,571 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:44,826 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:45,069 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:45,641 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:46,491 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:46,785 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:26:47,047 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:26:47,304 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:47,586 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:26:47,855 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:26:49,164 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:49,530 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:50,139 INFO L93 Difference]: Finished difference Result 677 states and 879 transitions. [2020-08-21 20:26:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 20:26:50,139 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-21 20:26:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:50,145 INFO L225 Difference]: With dead ends: 677 [2020-08-21 20:26:50,146 INFO L226 Difference]: Without dead ends: 506 [2020-08-21 20:26:50,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 20:26:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-21 20:26:50,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 448. [2020-08-21 20:26:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-08-21 20:26:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 529 transitions. [2020-08-21 20:26:50,244 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 529 transitions. Word has length 78 [2020-08-21 20:26:50,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:50,245 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 529 transitions. [2020-08-21 20:26:50,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:26:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 529 transitions. [2020-08-21 20:26:50,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 20:26:50,249 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:50,249 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:50,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:26:50,250 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:50,250 INFO L82 PathProgramCache]: Analyzing trace with hash 524664374, now seen corresponding path program 1 times [2020-08-21 20:26:50,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:50,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986242511] [2020-08-21 20:26:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,500 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:26:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:26:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:26:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:26:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 20:26:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 20:26:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 20:26:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:26:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 20:26:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 20:26:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 20:26:50,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986242511] [2020-08-21 20:26:50,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:26:50,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 20:26:50,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344075719] [2020-08-21 20:26:50,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 20:26:50,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:50,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 20:26:50,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 20:26:50,717 INFO L87 Difference]: Start difference. First operand 448 states and 529 transitions. Second operand 13 states. [2020-08-21 20:26:51,187 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:51,767 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:52,256 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:52,506 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:26:52,792 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:53,038 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:53,282 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:53,545 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:26:53,820 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:54,084 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:55,646 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:55,873 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:56,096 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:56,333 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:56,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:56,821 INFO L93 Difference]: Finished difference Result 904 states and 1154 transitions. [2020-08-21 20:26:56,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 20:26:56,821 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-21 20:26:56,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:56,828 INFO L225 Difference]: With dead ends: 904 [2020-08-21 20:26:56,828 INFO L226 Difference]: Without dead ends: 480 [2020-08-21 20:26:56,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 20:26:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-08-21 20:26:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 418. [2020-08-21 20:26:56,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-21 20:26:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 497 transitions. [2020-08-21 20:26:56,918 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 497 transitions. Word has length 136 [2020-08-21 20:26:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:56,919 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 497 transitions. [2020-08-21 20:26:56,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 20:26:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 497 transitions. [2020-08-21 20:26:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-21 20:26:56,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:56,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:56,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:26:56,922 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:56,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:56,922 INFO L82 PathProgramCache]: Analyzing trace with hash -532032326, now seen corresponding path program 1 times [2020-08-21 20:26:56,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:56,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24876018] [2020-08-21 20:26:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,200 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:57,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:26:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:26:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:26:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 20:26:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 20:26:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:26:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 20:26:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 20:26:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 20:26:57,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24876018] [2020-08-21 20:26:57,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:26:57,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 20:26:57,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443551425] [2020-08-21 20:26:57,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:26:57,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:57,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:26:57,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:26:57,441 INFO L87 Difference]: Start difference. First operand 418 states and 497 transitions. Second operand 12 states. [2020-08-21 20:26:58,012 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:58,239 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:58,452 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:58,987 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:59,223 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:59,435 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:27:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:27:00,251 INFO L93 Difference]: Finished difference Result 761 states and 937 transitions. [2020-08-21 20:27:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 20:27:00,253 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-21 20:27:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:27:00,259 INFO L225 Difference]: With dead ends: 761 [2020-08-21 20:27:00,259 INFO L226 Difference]: Without dead ends: 367 [2020-08-21 20:27:00,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:27:00,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-21 20:27:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 343. [2020-08-21 20:27:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-21 20:27:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2020-08-21 20:27:00,326 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 128 [2020-08-21 20:27:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:27:00,326 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2020-08-21 20:27:00,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:27:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2020-08-21 20:27:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 20:27:00,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:27:00,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:00,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:27:00,329 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:27:00,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:27:00,330 INFO L82 PathProgramCache]: Analyzing trace with hash 759278389, now seen corresponding path program 1 times [2020-08-21 20:27:00,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:27:00,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119458760] [2020-08-21 20:27:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:27:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,626 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:27:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:27:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:27:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:27:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:27:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:27:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:27:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:27:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:27:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:27:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 20:27:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 20:27:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:27:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 20:27:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 20:27:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 20:27:00,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119458760] [2020-08-21 20:27:00,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:27:00,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 20:27:00,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336456959] [2020-08-21 20:27:00,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:27:00,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:27:00,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:27:00,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:27:00,862 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand 10 states. [2020-08-21 20:27:02,508 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:27:02,726 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:27:02,951 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:27:03,188 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:27:03,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:27:03,542 INFO L93 Difference]: Finished difference Result 632 states and 772 transitions. [2020-08-21 20:27:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:27:03,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-21 20:27:03,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:27:03,546 INFO L225 Difference]: With dead ends: 632 [2020-08-21 20:27:03,546 INFO L226 Difference]: Without dead ends: 372 [2020-08-21 20:27:03,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:27:03,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-08-21 20:27:03,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 348. [2020-08-21 20:27:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-21 20:27:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 410 transitions. [2020-08-21 20:27:03,612 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 410 transitions. Word has length 132 [2020-08-21 20:27:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:27:03,613 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 410 transitions. [2020-08-21 20:27:03,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:27:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 410 transitions. [2020-08-21 20:27:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 20:27:03,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:27:03,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:03,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:27:03,616 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:27:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:27:03,616 INFO L82 PathProgramCache]: Analyzing trace with hash 249805299, now seen corresponding path program 1 times [2020-08-21 20:27:03,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:27:03,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644344263] [2020-08-21 20:27:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:27:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,891 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:27:03,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:27:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:27:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:27:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:27:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:27:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:27:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:27:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:27:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:27:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 20:27:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 20:27:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:27:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 20:27:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:03,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 20:27:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 20:27:04,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644344263] [2020-08-21 20:27:04,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:27:04,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 20:27:04,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625135024] [2020-08-21 20:27:04,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:27:04,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:27:04,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:27:04,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:27:04,026 INFO L87 Difference]: Start difference. First operand 348 states and 410 transitions. Second operand 10 states. [2020-08-21 20:27:04,736 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:27:06,133 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:27:06,387 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:27:06,627 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:27:06,867 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:27:07,130 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:27:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:27:07,436 INFO L93 Difference]: Finished difference Result 379 states and 458 transitions. [2020-08-21 20:27:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 20:27:07,437 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-21 20:27:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:27:07,445 INFO L225 Difference]: With dead ends: 379 [2020-08-21 20:27:07,445 INFO L226 Difference]: Without dead ends: 376 [2020-08-21 20:27:07,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 20:27:07,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-08-21 20:27:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 348. [2020-08-21 20:27:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-21 20:27:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 409 transitions. [2020-08-21 20:27:07,548 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 409 transitions. Word has length 132 [2020-08-21 20:27:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:27:07,550 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 409 transitions. [2020-08-21 20:27:07,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:27:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 409 transitions. [2020-08-21 20:27:07,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 20:27:07,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:27:07,553 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:07,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 20:27:07,553 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:27:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:27:07,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1295460868, now seen corresponding path program 1 times [2020-08-21 20:27:07,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:27:07,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089969467] [2020-08-21 20:27:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:27:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,848 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:27:07,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:27:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:27:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:27:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:27:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:27:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:27:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:27:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:27:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:27:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 20:27:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:08,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 20:27:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:08,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:08,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:27:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:08,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:08,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 20:27:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 20:27:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 20:27:08,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089969467] [2020-08-21 20:27:08,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:27:08,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 20:27:08,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618790225] [2020-08-21 20:27:08,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:27:08,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:27:08,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:27:08,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:27:08,066 INFO L87 Difference]: Start difference. First operand 348 states and 409 transitions. Second operand 12 states. [2020-08-21 20:27:08,601 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:27:09,210 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:27:09,935 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:27:10,210 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:27:10,450 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:27:10,683 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:27:10,940 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:27:11,188 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:27:12,230 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:27:12,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:27:12,971 INFO L93 Difference]: Finished difference Result 832 states and 1064 transitions. [2020-08-21 20:27:12,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 20:27:12,972 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-21 20:27:12,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:27:12,977 INFO L225 Difference]: With dead ends: 832 [2020-08-21 20:27:12,978 INFO L226 Difference]: Without dead ends: 567 [2020-08-21 20:27:12,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-21 20:27:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-08-21 20:27:13,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 483. [2020-08-21 20:27:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-08-21 20:27:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 575 transitions. [2020-08-21 20:27:13,141 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 575 transitions. Word has length 136 [2020-08-21 20:27:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:27:13,142 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 575 transitions. [2020-08-21 20:27:13,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:27:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 575 transitions. [2020-08-21 20:27:13,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-21 20:27:13,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:27:13,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:13,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 20:27:13,149 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:27:13,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:27:13,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1491934830, now seen corresponding path program 2 times [2020-08-21 20:27:13,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:27:13,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769136582] [2020-08-21 20:27:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:27:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,478 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:27:13,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:27:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:27:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:27:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:27:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:27:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:27:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:27:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:27:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:27:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 20:27:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:27:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:27:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:27:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 20:27:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 20:27:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:27:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-21 20:27:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 20:27:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-21 20:27:13,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769136582] [2020-08-21 20:27:13,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:27:13,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 20:27:13,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509358193] [2020-08-21 20:27:13,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 20:27:13,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:27:13,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 20:27:13,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-21 20:27:13,876 INFO L87 Difference]: Start difference. First operand 483 states and 575 transitions. Second operand 13 states. [2020-08-21 20:27:15,166 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:27:15,425 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:27:16,950 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:27:17,208 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:27:17,445 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:27:17,894 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-21 20:27:19,242 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-21 20:27:19,503 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 20:27:19,788 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:27:20,056 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:27:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:27:20,890 INFO L93 Difference]: Finished difference Result 1322 states and 1661 transitions. [2020-08-21 20:27:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 20:27:20,891 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-21 20:27:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:27:20,900 INFO L225 Difference]: With dead ends: 1322 [2020-08-21 20:27:20,901 INFO L226 Difference]: Without dead ends: 920 [2020-08-21 20:27:20,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 20:27:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-08-21 20:27:21,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 789. [2020-08-21 20:27:21,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-21 20:27:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 924 transitions. [2020-08-21 20:27:21,043 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 924 transitions. Word has length 189 [2020-08-21 20:27:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:27:21,044 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 924 transitions. [2020-08-21 20:27:21,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 20:27:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 924 transitions. [2020-08-21 20:27:21,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-21 20:27:21,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:27:21,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:21,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 20:27:21,048 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:27:21,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:27:21,048 INFO L82 PathProgramCache]: Analyzing trace with hash 384547988, now seen corresponding path program 1 times [2020-08-21 20:27:21,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:27:21,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43273069] [2020-08-21 20:27:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:27:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,310 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:27:21,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:27:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:27:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:27:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:27:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:27:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:27:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:27:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:27:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:27:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 20:27:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:27:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:27:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:27:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 20:27:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 20:27:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:27:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:27:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:27:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-21 20:27:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 20:27:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:27:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-08-21 20:27:21,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43273069] [2020-08-21 20:27:21,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:27:21,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 20:27:21,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86102660] [2020-08-21 20:27:21,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 20:27:21,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:27:21,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 20:27:21,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 20:27:21,524 INFO L87 Difference]: Start difference. First operand 789 states and 924 transitions. Second operand 13 states. [2020-08-21 20:27:22,094 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:27:22,327 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:27:22,544 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:27:23,683 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:27:23,949 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:27:24,214 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:27:24,454 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:27:24,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:27:24,744 INFO L93 Difference]: Finished difference Result 1041 states and 1226 transitions. [2020-08-21 20:27:24,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 20:27:24,745 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-21 20:27:24,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:27:24,745 INFO L225 Difference]: With dead ends: 1041 [2020-08-21 20:27:24,746 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 20:27:24,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 20:27:24,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 20:27:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 20:27:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 20:27:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 20:27:24,749 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2020-08-21 20:27:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:27:24,750 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 20:27:24,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 20:27:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 20:27:24,750 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 20:27:24,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 20:27:24,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 20:27:26,255 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 246 [2020-08-21 20:27:27,161 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 248 [2020-08-21 20:27:29,266 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 253 [2020-08-21 20:27:29,593 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 249