/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:57:06,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:57:06,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:57:06,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:57:06,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:57:06,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:57:06,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:57:06,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:57:06,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:57:06,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:57:06,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:57:06,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:57:06,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:57:06,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:57:06,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:57:06,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:57:06,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:57:06,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:57:06,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:57:06,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:57:06,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:57:06,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:57:06,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:57:06,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:57:06,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:57:06,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:57:06,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:57:06,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:57:06,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:57:06,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:57:06,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:57:06,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:57:06,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:57:06,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:57:06,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:57:06,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:57:06,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:57:06,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:57:06,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:57:06,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:57:06,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:57:06,695 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 21:57:06,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:57:06,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:57:06,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:57:06,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:57:06,736 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:57:06,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:57:06,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:57:06,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:57:06,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:57:06,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:57:06,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:57:06,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:57:06,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:57:06,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:57:06,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:57:06,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:57:06,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:57:06,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:57:06,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:57:06,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:57:06,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:57:06,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:57:06,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:57:06,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:57:06,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:57:06,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:57:06,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:57:06,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:57:06,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:57:06,742 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 21:57:07,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:57:07,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:57:07,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:57:07,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:57:07,052 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:57:07,053 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-08-21 21:57:07,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/615eedd5f/7fe6af8faecb48a3aa2892b4c42bda4b/FLAGb8fd974fd [2020-08-21 21:57:07,650 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:57:07,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-08-21 21:57:07,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/615eedd5f/7fe6af8faecb48a3aa2892b4c42bda4b/FLAGb8fd974fd [2020-08-21 21:57:07,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/615eedd5f/7fe6af8faecb48a3aa2892b4c42bda4b [2020-08-21 21:57:07,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:57:07,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:57:07,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:57:07,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:57:07,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:57:07,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:57:07" (1/1) ... [2020-08-21 21:57:07,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29040ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:07, skipping insertion in model container [2020-08-21 21:57:07,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:57:07" (1/1) ... [2020-08-21 21:57:07,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:57:08,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:57:08,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:57:08,544 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:57:08,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:57:08,654 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:57:08,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:08 WrapperNode [2020-08-21 21:57:08,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:57:08,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:57:08,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:57:08,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:57:08,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:08" (1/1) ... [2020-08-21 21:57:08,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:08" (1/1) ... [2020-08-21 21:57:08,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:08" (1/1) ... [2020-08-21 21:57:08,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:08" (1/1) ... [2020-08-21 21:57:08,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:08" (1/1) ... [2020-08-21 21:57:08,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:08" (1/1) ... [2020-08-21 21:57:08,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:08" (1/1) ... [2020-08-21 21:57:08,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:57:08,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:57:08,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:57:08,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:57:08,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:08" (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 21:57:08,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:57:08,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:57:08,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:57:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:57:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:57:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:57:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:57:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:57:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:57:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:57:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:57:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:57:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:57:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:57:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:57:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:57:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:57:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:57:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:57:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 21:57:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:57:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:57:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:57:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:57:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:57:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:57:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:57:08,809 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:57:08,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:57:08,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:57:08,809 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:57:08,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:57:08,809 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:57:08,809 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:57:08,810 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:57:08,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:57:08,810 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:57:08,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:57:08,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:57:08,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:57:08,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:57:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:57:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:57:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:57:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:57:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:57:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:57:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:57:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:57:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:57:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:57:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:57:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:57:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:57:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:57:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:57:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:57:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:57:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:57:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:57:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:57:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:57:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:57:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:57:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:57:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:57:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:57:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:57:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:57:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:57:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:57:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:57:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:57:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:57:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:57:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:57:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:57:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:57:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:57:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:57:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 21:57:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:57:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:57:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:57:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:57:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:57:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:57:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:57:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:57:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:57:09,901 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:57:09,902 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:57:09,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:57:09 BoogieIcfgContainer [2020-08-21 21:57:09,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:57:09,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:57:09,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:57:09,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:57:09,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:57:07" (1/3) ... [2020-08-21 21:57:09,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b685120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:57:09, skipping insertion in model container [2020-08-21 21:57:09,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:57:08" (2/3) ... [2020-08-21 21:57:09,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b685120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:57:09, skipping insertion in model container [2020-08-21 21:57:09,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:57:09" (3/3) ... [2020-08-21 21:57:09,915 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2020-08-21 21:57:09,926 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:57:09,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:57:09,948 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:57:09,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:57:09,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:57:09,974 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:57:09,974 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:57:09,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:57:09,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:57:09,974 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:57:09,975 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:57:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-21 21:57:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 21:57:10,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:10,008 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 21:57:10,009 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:10,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:10,015 INFO L82 PathProgramCache]: Analyzing trace with hash 135364863, now seen corresponding path program 1 times [2020-08-21 21:57:10,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:10,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923447667] [2020-08-21 21:57:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,691 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:10,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:57:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:57:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,833 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 21:57:10,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923447667] [2020-08-21 21:57:10,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:10,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:57:10,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367932794] [2020-08-21 21:57:10,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:57:10,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:10,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:57:10,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:57:10,861 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 3 states. [2020-08-21 21:57:12,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:12,019 INFO L93 Difference]: Finished difference Result 323 states and 418 transitions. [2020-08-21 21:57:12,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:57:12,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 21:57:12,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:12,037 INFO L225 Difference]: With dead ends: 323 [2020-08-21 21:57:12,037 INFO L226 Difference]: Without dead ends: 174 [2020-08-21 21:57:12,042 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 21:57:12,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-21 21:57:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-08-21 21:57:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-21 21:57:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-21 21:57:12,201 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 46 [2020-08-21 21:57:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:12,202 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-21 21:57:12,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:57:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-21 21:57:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 21:57:12,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:12,208 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 21:57:12,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:57:12,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:12,209 INFO L82 PathProgramCache]: Analyzing trace with hash 327228860, now seen corresponding path program 1 times [2020-08-21 21:57:12,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:12,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973203430] [2020-08-21 21:57:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:12,584 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:12,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:12,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:12,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:12,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:57:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:57:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:12,625 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 21:57:12,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973203430] [2020-08-21 21:57:12,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:12,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:57:12,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397388579] [2020-08-21 21:57:12,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:57:12,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:12,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:57:12,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:57:12,629 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 4 states. [2020-08-21 21:57:13,004 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:13,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:13,841 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2020-08-21 21:57:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:57:13,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 21:57:13,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:13,846 INFO L225 Difference]: With dead ends: 256 [2020-08-21 21:57:13,846 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 21:57:13,848 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 21:57:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 21:57:13,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-21 21:57:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 21:57:13,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2020-08-21 21:57:13,884 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 47 [2020-08-21 21:57:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:13,884 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2020-08-21 21:57:13,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:57:13,884 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2020-08-21 21:57:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 21:57:13,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:13,887 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 21:57:13,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:57:13,887 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash -207054876, now seen corresponding path program 1 times [2020-08-21 21:57:13,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:13,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823455265] [2020-08-21 21:57:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,185 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:14,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:57:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:57:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,268 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 21:57:14,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823455265] [2020-08-21 21:57:14,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:14,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:57:14,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666558083] [2020-08-21 21:57:14,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:57:14,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:14,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:57:14,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:57:14,271 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 8 states. [2020-08-21 21:57:14,588 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:14,909 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:15,140 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:15,366 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:16,608 INFO L93 Difference]: Finished difference Result 265 states and 323 transitions. [2020-08-21 21:57:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:57:16,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 21:57:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:16,612 INFO L225 Difference]: With dead ends: 265 [2020-08-21 21:57:16,612 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 21:57:16,620 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 21:57:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 21:57:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-21 21:57:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 21:57:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-08-21 21:57:16,688 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 51 [2020-08-21 21:57:16,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:16,688 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-08-21 21:57:16,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:57:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-08-21 21:57:16,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 21:57:16,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:16,702 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 21:57:16,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:57:16,703 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:16,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:16,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1468702982, now seen corresponding path program 1 times [2020-08-21 21:57:16,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:16,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325817037] [2020-08-21 21:57:16,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,066 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:17,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 21:57:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:57:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 21:57:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,163 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 21:57:17,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325817037] [2020-08-21 21:57:17,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:17,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:57:17,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156603865] [2020-08-21 21:57:17,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:57:17,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:17,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:57:17,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:57:17,166 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 6 states. [2020-08-21 21:57:17,458 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:18,548 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:19,267 INFO L93 Difference]: Finished difference Result 357 states and 439 transitions. [2020-08-21 21:57:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:57:19,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 21:57:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:19,280 INFO L225 Difference]: With dead ends: 357 [2020-08-21 21:57:19,280 INFO L226 Difference]: Without dead ends: 250 [2020-08-21 21:57:19,282 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 21:57:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-08-21 21:57:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 209. [2020-08-21 21:57:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-21 21:57:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2020-08-21 21:57:19,342 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 64 [2020-08-21 21:57:19,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:19,342 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2020-08-21 21:57:19,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:57:19,343 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2020-08-21 21:57:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 21:57:19,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:19,344 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 21:57:19,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:57:19,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:19,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1930431345, now seen corresponding path program 1 times [2020-08-21 21:57:19,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:19,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135255352] [2020-08-21 21:57:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,599 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 21:57:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 21:57:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:57:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:19,714 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 21:57:19,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135255352] [2020-08-21 21:57:19,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:19,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:57:19,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541045299] [2020-08-21 21:57:19,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:57:19,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:19,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:57:19,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:57:19,717 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 8 states. [2020-08-21 21:57:20,056 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:20,954 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:21,260 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:21,771 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:22,023 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:22,294 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:23,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:23,307 INFO L93 Difference]: Finished difference Result 622 states and 764 transitions. [2020-08-21 21:57:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:57:23,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-21 21:57:23,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:23,312 INFO L225 Difference]: With dead ends: 622 [2020-08-21 21:57:23,312 INFO L226 Difference]: Without dead ends: 437 [2020-08-21 21:57:23,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:57:23,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-08-21 21:57:23,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 373. [2020-08-21 21:57:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-21 21:57:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 426 transitions. [2020-08-21 21:57:23,396 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 426 transitions. Word has length 78 [2020-08-21 21:57:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:23,397 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 426 transitions. [2020-08-21 21:57:23,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:57:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 426 transitions. [2020-08-21 21:57:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 21:57:23,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:23,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:57:23,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:57:23,399 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:23,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:23,400 INFO L82 PathProgramCache]: Analyzing trace with hash -613018165, now seen corresponding path program 1 times [2020-08-21 21:57:23,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:23,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520545844] [2020-08-21 21:57:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,637 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:23,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:57:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:57:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 21:57:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:57:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:23,736 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 21:57:23,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520545844] [2020-08-21 21:57:23,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:23,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:57:23,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218814326] [2020-08-21 21:57:23,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:57:23,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:23,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:57:23,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:57:23,739 INFO L87 Difference]: Start difference. First operand 373 states and 426 transitions. Second operand 9 states. [2020-08-21 21:57:24,063 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:25,115 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:25,372 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:26,398 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:26,623 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:26,854 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:27,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:27,071 INFO L93 Difference]: Finished difference Result 476 states and 594 transitions. [2020-08-21 21:57:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 21:57:27,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-21 21:57:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:27,075 INFO L225 Difference]: With dead ends: 476 [2020-08-21 21:57:27,076 INFO L226 Difference]: Without dead ends: 473 [2020-08-21 21:57:27,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 21:57:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-08-21 21:57:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 373. [2020-08-21 21:57:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-21 21:57:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 425 transitions. [2020-08-21 21:57:27,142 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 425 transitions. Word has length 82 [2020-08-21 21:57:27,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:27,143 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 425 transitions. [2020-08-21 21:57:27,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:57:27,143 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 425 transitions. [2020-08-21 21:57:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 21:57:27,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:27,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:57:27,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:57:27,145 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:27,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:27,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1664141551, now seen corresponding path program 1 times [2020-08-21 21:57:27,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:27,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755676835] [2020-08-21 21:57:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,383 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:27,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:57:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:57:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 21:57:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 21:57:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 21:57:27,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755676835] [2020-08-21 21:57:27,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:27,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:57:27,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733545079] [2020-08-21 21:57:27,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:57:27,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:27,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:57:27,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:57:27,534 INFO L87 Difference]: Start difference. First operand 373 states and 425 transitions. Second operand 9 states. [2020-08-21 21:57:28,384 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:28,627 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:57:28,874 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:29,112 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:30,214 INFO L93 Difference]: Finished difference Result 830 states and 1028 transitions. [2020-08-21 21:57:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:57:30,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-21 21:57:30,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:30,219 INFO L225 Difference]: With dead ends: 830 [2020-08-21 21:57:30,219 INFO L226 Difference]: Without dead ends: 481 [2020-08-21 21:57:30,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:57:30,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-08-21 21:57:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 383. [2020-08-21 21:57:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-08-21 21:57:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 435 transitions. [2020-08-21 21:57:30,293 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 435 transitions. Word has length 98 [2020-08-21 21:57:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:30,293 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 435 transitions. [2020-08-21 21:57:30,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:57:30,293 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 435 transitions. [2020-08-21 21:57:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 21:57:30,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:30,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:57:30,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:57:30,296 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:30,296 INFO L82 PathProgramCache]: Analyzing trace with hash -770655213, now seen corresponding path program 1 times [2020-08-21 21:57:30,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:30,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897555734] [2020-08-21 21:57:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,538 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:57:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:57:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 21:57:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 21:57:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 21:57:30,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897555734] [2020-08-21 21:57:30,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:30,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 21:57:30,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543942724] [2020-08-21 21:57:30,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:57:30,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:30,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:57:30,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:57:30,711 INFO L87 Difference]: Start difference. First operand 383 states and 435 transitions. Second operand 11 states. [2020-08-21 21:57:31,146 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:31,380 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:31,629 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:32,177 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:32,422 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:32,661 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:33,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:33,794 INFO L93 Difference]: Finished difference Result 850 states and 1050 transitions. [2020-08-21 21:57:33,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:57:33,794 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-21 21:57:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:33,797 INFO L225 Difference]: With dead ends: 850 [2020-08-21 21:57:33,798 INFO L226 Difference]: Without dead ends: 491 [2020-08-21 21:57:33,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:57:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-21 21:57:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-21 21:57:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-21 21:57:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 443 transitions. [2020-08-21 21:57:33,904 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 443 transitions. Word has length 98 [2020-08-21 21:57:33,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:33,906 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 443 transitions. [2020-08-21 21:57:33,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:57:33,907 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 443 transitions. [2020-08-21 21:57:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 21:57:33,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:33,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:57:33,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:57:33,913 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:33,913 INFO L82 PathProgramCache]: Analyzing trace with hash -778414572, now seen corresponding path program 1 times [2020-08-21 21:57:33,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:33,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679475221] [2020-08-21 21:57:33,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,213 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:57:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:57:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 21:57:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 21:57:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 21:57:34,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679475221] [2020-08-21 21:57:34,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:34,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:57:34,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470480299] [2020-08-21 21:57:34,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:57:34,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:34,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:57:34,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:57:34,361 INFO L87 Difference]: Start difference. First operand 391 states and 443 transitions. Second operand 7 states. [2020-08-21 21:57:34,677 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:35,181 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:37,268 INFO L93 Difference]: Finished difference Result 1153 states and 1472 transitions. [2020-08-21 21:57:37,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 21:57:37,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-21 21:57:37,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:37,274 INFO L225 Difference]: With dead ends: 1153 [2020-08-21 21:57:37,274 INFO L226 Difference]: Without dead ends: 786 [2020-08-21 21:57:37,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:57:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-08-21 21:57:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 687. [2020-08-21 21:57:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-08-21 21:57:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 813 transitions. [2020-08-21 21:57:37,411 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 813 transitions. Word has length 98 [2020-08-21 21:57:37,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:37,412 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 813 transitions. [2020-08-21 21:57:37,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:57:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 813 transitions. [2020-08-21 21:57:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 21:57:37,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:37,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:57:37,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:57:37,416 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:37,417 INFO L82 PathProgramCache]: Analyzing trace with hash 469491758, now seen corresponding path program 1 times [2020-08-21 21:57:37,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:37,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419394070] [2020-08-21 21:57:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,770 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:37,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:57:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:57:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:57:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:37,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:38,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:38,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:38,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:38,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 21:57:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:38,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 21:57:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 21:57:38,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419394070] [2020-08-21 21:57:38,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:57:38,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 21:57:38,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426376941] [2020-08-21 21:57:38,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 21:57:38,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:38,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 21:57:38,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 21:57:38,164 INFO L87 Difference]: Start difference. First operand 687 states and 813 transitions. Second operand 17 states. [2020-08-21 21:57:38,709 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:39,080 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:57:39,359 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:39,609 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:40,227 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:41,159 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:41,482 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:41,751 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:42,028 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:42,367 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:42,638 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:43,205 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 21:57:43,733 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 21:57:45,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:45,818 INFO L93 Difference]: Finished difference Result 1418 states and 1746 transitions. [2020-08-21 21:57:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 21:57:45,819 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-08-21 21:57:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:45,824 INFO L225 Difference]: With dead ends: 1418 [2020-08-21 21:57:45,824 INFO L226 Difference]: Without dead ends: 755 [2020-08-21 21:57:45,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 21:57:45,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-08-21 21:57:45,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 659. [2020-08-21 21:57:45,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-08-21 21:57:45,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 767 transitions. [2020-08-21 21:57:45,929 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 767 transitions. Word has length 102 [2020-08-21 21:57:45,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:45,930 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 767 transitions. [2020-08-21 21:57:45,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 21:57:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 767 transitions. [2020-08-21 21:57:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 21:57:45,932 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:45,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:45,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:57:45,933 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:45,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:45,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1698521745, now seen corresponding path program 1 times [2020-08-21 21:57:45,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:45,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518999890] [2020-08-21 21:57:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,218 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:57:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:57:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:57:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 21:57:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 21:57:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 21:57:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:57:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 21:57:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 21:57:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 21:57:46,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518999890] [2020-08-21 21:57:46,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:57:46,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 21:57:46,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492451073] [2020-08-21 21:57:46,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 21:57:46,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:46,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 21:57:46,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:57:46,506 INFO L87 Difference]: Start difference. First operand 659 states and 767 transitions. Second operand 14 states. [2020-08-21 21:57:46,984 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:47,598 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:49,335 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-21 21:57:49,797 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-08-21 21:57:50,246 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-08-21 21:57:51,055 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:57:51,308 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:51,570 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:51,801 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:53,327 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-08-21 21:57:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:54,225 INFO L93 Difference]: Finished difference Result 2026 states and 2659 transitions. [2020-08-21 21:57:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-21 21:57:54,225 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-21 21:57:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:54,234 INFO L225 Difference]: With dead ends: 2026 [2020-08-21 21:57:54,235 INFO L226 Difference]: Without dead ends: 1515 [2020-08-21 21:57:54,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2020-08-21 21:57:54,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-08-21 21:57:54,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1215. [2020-08-21 21:57:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-08-21 21:57:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1429 transitions. [2020-08-21 21:57:54,431 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1429 transitions. Word has length 155 [2020-08-21 21:57:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:54,432 INFO L479 AbstractCegarLoop]: Abstraction has 1215 states and 1429 transitions. [2020-08-21 21:57:54,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 21:57:54,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1429 transitions. [2020-08-21 21:57:54,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 21:57:54,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:54,435 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:54,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 21:57:54,436 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:54,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:54,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1973281359, now seen corresponding path program 1 times [2020-08-21 21:57:54,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:54,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402526816] [2020-08-21 21:57:54,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,738 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:57:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:57:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:57:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 21:57:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 21:57:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 21:57:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:57:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 21:57:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:54,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 21:57:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-21 21:57:55,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402526816] [2020-08-21 21:57:55,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:57:55,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 21:57:55,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796895832] [2020-08-21 21:57:55,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 21:57:55,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:55,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 21:57:55,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:57:55,040 INFO L87 Difference]: Start difference. First operand 1215 states and 1429 transitions. Second operand 14 states. [2020-08-21 21:57:55,793 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:56,017 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:56,229 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:57,566 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:57,790 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:57:58,029 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:58,265 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:58,499 INFO L93 Difference]: Finished difference Result 1687 states and 2024 transitions. [2020-08-21 21:57:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 21:57:58,508 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-21 21:57:58,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:58,510 INFO L225 Difference]: With dead ends: 1687 [2020-08-21 21:57:58,510 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 21:57:58,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-08-21 21:57:58,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 21:57:58,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 21:57:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 21:57:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 21:57:58,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2020-08-21 21:57:58,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:58,516 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 21:57:58,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 21:57:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 21:57:58,516 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 21:57:58,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 21:57:58,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 21:57:59,160 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2020-08-21 21:58:00,987 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 318 DAG size of output: 285 [2020-08-21 21:58:02,173 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 286 [2020-08-21 21:58:02,781 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 277 [2020-08-21 21:58:04,471 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 277 [2020-08-21 21:58:05,208 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 19 [2020-08-21 21:58:05,390 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-21 21:58:05,568 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 22 [2020-08-21 21:58:06,132 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 22