/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:32:02,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:32:02,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:32:02,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:32:02,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:32:02,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:32:02,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:32:02,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:32:02,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:32:02,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:32:02,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:32:02,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:32:02,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:32:02,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:32:02,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:32:02,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:32:02,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:32:02,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:32:02,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:32:02,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:32:02,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:32:02,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:32:02,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:32:02,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:32:02,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:32:02,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:32:02,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:32:02,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:32:02,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:32:02,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:32:02,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:32:02,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:32:02,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:32:02,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:32:02,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:32:02,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:32:02,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:32:02,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:32:02,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:32:02,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:32:02,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:32:02,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:32:02,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:32:02,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:32:02,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:32:02,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:32:02,708 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:32:02,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:32:02,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:32:02,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:32:02,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:32:02,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:32:02,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:32:02,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:32:02,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:32:02,710 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:32:02,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:32:02,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:32:02,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:32:02,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:32:02,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:32:02,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:32:02,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:32:02,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:32:02,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:32:02,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:32:02,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:32:02,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:32:02,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:32:02,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:32:02,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:32:02,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:32:03,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:32:03,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:32:03,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:32:03,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:32:03,042 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:32:03,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c [2020-08-21 15:32:03,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84f6405a/c514a32f05b344979469a1f2d90fb55a/FLAGde29bd071 [2020-08-21 15:32:03,605 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:32:03,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c [2020-08-21 15:32:03,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84f6405a/c514a32f05b344979469a1f2d90fb55a/FLAGde29bd071 [2020-08-21 15:32:03,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84f6405a/c514a32f05b344979469a1f2d90fb55a [2020-08-21 15:32:03,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:32:03,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:32:03,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:32:03,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:32:03,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:32:03,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:32:03" (1/1) ... [2020-08-21 15:32:03,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17979b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:03, skipping insertion in model container [2020-08-21 15:32:03,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:32:03" (1/1) ... [2020-08-21 15:32:03,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:32:03,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:32:04,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:32:04,284 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:32:04,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:32:04,570 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:32:04,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:04 WrapperNode [2020-08-21 15:32:04,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:32:04,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:32:04,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:32:04,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:32:04,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:04" (1/1) ... [2020-08-21 15:32:04,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:04" (1/1) ... [2020-08-21 15:32:04,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:04" (1/1) ... [2020-08-21 15:32:04,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:04" (1/1) ... [2020-08-21 15:32:04,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:04" (1/1) ... [2020-08-21 15:32:04,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:04" (1/1) ... [2020-08-21 15:32:04,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:04" (1/1) ... [2020-08-21 15:32:04,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:32:04,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:32:04,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:32:04,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:32:04,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:32:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:32:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:32:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:32:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:32:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:32:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:32:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:32:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:32:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 15:32:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:32:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:32:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:32:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:32:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:32:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:32:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 15:32:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:32:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:32:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:32:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:32:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:32:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:32:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:32:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:32:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:32:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:32:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 15:32:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 15:32:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:32:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:32:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:32:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:32:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:32:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:32:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:32:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:32:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:32:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:32:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:32:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:32:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:32:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:32:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:32:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:32:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:32:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:32:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:32:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:32:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 15:32:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:32:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:32:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:32:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:32:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:32:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:32:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:32:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:32:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:32:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:32:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:32:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 15:32:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:32:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:32:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:32:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 15:32:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:32:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:32:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:32:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:32:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:32:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:32:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:32:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:32:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 15:32:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:32:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:32:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:32:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:32:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:32:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:32:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:32:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:32:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:32:05,793 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:32:05,793 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:32:05,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:32:05 BoogieIcfgContainer [2020-08-21 15:32:05,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:32:05,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:32:05,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:32:05,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:32:05,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:32:03" (1/3) ... [2020-08-21 15:32:05,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3315e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:32:05, skipping insertion in model container [2020-08-21 15:32:05,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:04" (2/3) ... [2020-08-21 15:32:05,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3315e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:32:05, skipping insertion in model container [2020-08-21 15:32:05,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:32:05" (3/3) ... [2020-08-21 15:32:05,807 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product44.cil.c [2020-08-21 15:32:05,817 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:32:05,825 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:32:05,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:32:05,865 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:32:05,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:32:05,866 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:32:05,866 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:32:05,866 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:32:05,866 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:32:05,867 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:32:05,867 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:32:05,889 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-21 15:32:05,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 15:32:05,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:05,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:05,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:05,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:05,907 INFO L82 PathProgramCache]: Analyzing trace with hash 925001116, now seen corresponding path program 1 times [2020-08-21 15:32:05,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:05,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857025165] [2020-08-21 15:32:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:06,638 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:06,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:06,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:06,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:06,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:06,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:32:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:06,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 15:32:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:32:06,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857025165] [2020-08-21 15:32:06,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:06,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:32:06,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872756332] [2020-08-21 15:32:06,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:32:06,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:06,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:32:06,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:32:06,763 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-08-21 15:32:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:08,029 INFO L93 Difference]: Finished difference Result 305 states and 395 transitions. [2020-08-21 15:32:08,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:32:08,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 15:32:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:08,046 INFO L225 Difference]: With dead ends: 305 [2020-08-21 15:32:08,047 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 15:32:08,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:32:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 15:32:08,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 135. [2020-08-21 15:32:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-21 15:32:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2020-08-21 15:32:08,147 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 51 [2020-08-21 15:32:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:08,147 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2020-08-21 15:32:08,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:32:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2020-08-21 15:32:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 15:32:08,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:08,151 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] [2020-08-21 15:32:08,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:32:08,152 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:08,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:08,152 INFO L82 PathProgramCache]: Analyzing trace with hash -214077655, now seen corresponding path program 1 times [2020-08-21 15:32:08,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:08,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071564045] [2020-08-21 15:32:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:08,534 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:08,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:08,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:08,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:08,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:08,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:08,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:32:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:08,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:32:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:32:08,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071564045] [2020-08-21 15:32:08,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:08,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:32:08,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215761613] [2020-08-21 15:32:08,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:32:08,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:08,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:32:08,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:32:08,598 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand 5 states. [2020-08-21 15:32:09,100 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:10,026 INFO L93 Difference]: Finished difference Result 237 states and 292 transitions. [2020-08-21 15:32:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:32:10,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 15:32:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:10,032 INFO L225 Difference]: With dead ends: 237 [2020-08-21 15:32:10,032 INFO L226 Difference]: Without dead ends: 161 [2020-08-21 15:32:10,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:32:10,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-21 15:32:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 126. [2020-08-21 15:32:10,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 15:32:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2020-08-21 15:32:10,075 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 52 [2020-08-21 15:32:10,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:10,076 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2020-08-21 15:32:10,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:32:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2020-08-21 15:32:10,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 15:32:10,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:10,079 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] [2020-08-21 15:32:10,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:32:10,079 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:10,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:10,080 INFO L82 PathProgramCache]: Analyzing trace with hash 784654360, now seen corresponding path program 1 times [2020-08-21 15:32:10,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:10,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805582058] [2020-08-21 15:32:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:10,473 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:10,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:10,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:10,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 15:32:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:32:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:10,625 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 15:32:10,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805582058] [2020-08-21 15:32:10,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:10,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:32:10,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154440201] [2020-08-21 15:32:10,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:32:10,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:10,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:32:10,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:32:10,630 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand 9 states. [2020-08-21 15:32:11,003 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:11,356 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:11,601 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:11,844 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:12,628 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:14,441 INFO L93 Difference]: Finished difference Result 430 states and 536 transitions. [2020-08-21 15:32:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 15:32:14,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 15:32:14,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:14,448 INFO L225 Difference]: With dead ends: 430 [2020-08-21 15:32:14,448 INFO L226 Difference]: Without dead ends: 332 [2020-08-21 15:32:14,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:32:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-21 15:32:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 251. [2020-08-21 15:32:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-08-21 15:32:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 300 transitions. [2020-08-21 15:32:14,535 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 300 transitions. Word has length 57 [2020-08-21 15:32:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:14,537 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 300 transitions. [2020-08-21 15:32:14,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:32:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 300 transitions. [2020-08-21 15:32:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 15:32:14,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:14,547 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] [2020-08-21 15:32:14,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:32:14,547 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:14,548 INFO L82 PathProgramCache]: Analyzing trace with hash 402514829, now seen corresponding path program 1 times [2020-08-21 15:32:14,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:14,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838918450] [2020-08-21 15:32:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:14,951 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:14,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:14,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:32:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:15,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 15:32:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:15,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 15:32:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:32:15,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838918450] [2020-08-21 15:32:15,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:15,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:32:15,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824639856] [2020-08-21 15:32:15,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:32:15,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:15,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:32:15,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:32:15,039 INFO L87 Difference]: Start difference. First operand 251 states and 300 transitions. Second operand 9 states. [2020-08-21 15:32:15,406 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:16,630 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:16,946 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:17,214 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:17,461 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:18,711 INFO L93 Difference]: Finished difference Result 810 states and 1064 transitions. [2020-08-21 15:32:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 15:32:18,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 15:32:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:18,720 INFO L225 Difference]: With dead ends: 810 [2020-08-21 15:32:18,720 INFO L226 Difference]: Without dead ends: 587 [2020-08-21 15:32:18,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 15:32:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-08-21 15:32:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 450. [2020-08-21 15:32:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-08-21 15:32:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 540 transitions. [2020-08-21 15:32:18,880 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 540 transitions. Word has length 62 [2020-08-21 15:32:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:18,881 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 540 transitions. [2020-08-21 15:32:18,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:32:18,881 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 540 transitions. [2020-08-21 15:32:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 15:32:18,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:18,883 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] [2020-08-21 15:32:18,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:32:18,884 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:18,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:18,884 INFO L82 PathProgramCache]: Analyzing trace with hash 571350953, now seen corresponding path program 1 times [2020-08-21 15:32:18,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:18,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952935449] [2020-08-21 15:32:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,164 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:19,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:32:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:32:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 15:32:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 15:32:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:32:19,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952935449] [2020-08-21 15:32:19,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:19,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 15:32:19,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911586411] [2020-08-21 15:32:19,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:32:19,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:19,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:32:19,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:32:19,283 INFO L87 Difference]: Start difference. First operand 450 states and 540 transitions. Second operand 10 states. [2020-08-21 15:32:19,706 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:20,783 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:21,076 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:21,349 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:22,018 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:23,089 INFO L93 Difference]: Finished difference Result 1266 states and 1696 transitions. [2020-08-21 15:32:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 15:32:23,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 15:32:23,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:23,097 INFO L225 Difference]: With dead ends: 1266 [2020-08-21 15:32:23,098 INFO L226 Difference]: Without dead ends: 844 [2020-08-21 15:32:23,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 15:32:23,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-08-21 15:32:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 649. [2020-08-21 15:32:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 15:32:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 779 transitions. [2020-08-21 15:32:23,280 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 779 transitions. Word has length 66 [2020-08-21 15:32:23,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:23,280 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 779 transitions. [2020-08-21 15:32:23,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:32:23,281 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 779 transitions. [2020-08-21 15:32:23,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 15:32:23,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:23,284 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] [2020-08-21 15:32:23,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:32:23,285 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:23,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:23,285 INFO L82 PathProgramCache]: Analyzing trace with hash 206198489, now seen corresponding path program 1 times [2020-08-21 15:32:23,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:23,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55797053] [2020-08-21 15:32:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,601 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:23,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:32:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:32:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:32:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 15:32:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:32:23,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55797053] [2020-08-21 15:32:23,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:23,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:32:23,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878511147] [2020-08-21 15:32:23,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:32:23,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:23,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:32:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:32:23,760 INFO L87 Difference]: Start difference. First operand 649 states and 779 transitions. Second operand 8 states. [2020-08-21 15:32:24,156 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:24,698 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:28,202 INFO L93 Difference]: Finished difference Result 2906 states and 4118 transitions. [2020-08-21 15:32:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 15:32:28,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-08-21 15:32:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:28,219 INFO L225 Difference]: With dead ends: 2906 [2020-08-21 15:32:28,220 INFO L226 Difference]: Without dead ends: 2285 [2020-08-21 15:32:28,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2020-08-21 15:32:28,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-08-21 15:32:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 1791. [2020-08-21 15:32:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2020-08-21 15:32:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2205 transitions. [2020-08-21 15:32:28,621 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2205 transitions. Word has length 99 [2020-08-21 15:32:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:28,621 INFO L479 AbstractCegarLoop]: Abstraction has 1791 states and 2205 transitions. [2020-08-21 15:32:28,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:32:28,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2205 transitions. [2020-08-21 15:32:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 15:32:28,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:28,626 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] [2020-08-21 15:32:28,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:32:28,627 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:28,627 INFO L82 PathProgramCache]: Analyzing trace with hash -763382534, now seen corresponding path program 1 times [2020-08-21 15:32:28,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:28,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643508410] [2020-08-21 15:32:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:28,923 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:28,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:28,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:28,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:28,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:28,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:32:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:32:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:32:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 15:32:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:32:29,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643508410] [2020-08-21 15:32:29,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:29,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:32:29,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683837446] [2020-08-21 15:32:29,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:32:29,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:29,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:32:29,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:32:29,116 INFO L87 Difference]: Start difference. First operand 1791 states and 2205 transitions. Second operand 12 states. [2020-08-21 15:32:29,678 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:29,931 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:30,159 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:31,030 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:31,302 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:31,549 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:33,155 INFO L93 Difference]: Finished difference Result 4034 states and 5429 transitions. [2020-08-21 15:32:33,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:32:33,156 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-08-21 15:32:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:33,177 INFO L225 Difference]: With dead ends: 4034 [2020-08-21 15:32:33,178 INFO L226 Difference]: Without dead ends: 2271 [2020-08-21 15:32:33,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 15:32:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2020-08-21 15:32:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 1791. [2020-08-21 15:32:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2020-08-21 15:32:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2197 transitions. [2020-08-21 15:32:33,561 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2197 transitions. Word has length 99 [2020-08-21 15:32:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:33,563 INFO L479 AbstractCegarLoop]: Abstraction has 1791 states and 2197 transitions. [2020-08-21 15:32:33,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:32:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2197 transitions. [2020-08-21 15:32:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 15:32:33,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:33,568 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] [2020-08-21 15:32:33,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:32:33,568 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:33,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1286005308, now seen corresponding path program 1 times [2020-08-21 15:32:33,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:33,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013742795] [2020-08-21 15:32:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,894 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:32:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:32:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:34,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:34,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:34,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:34,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:32:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:34,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 15:32:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:34,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:32:34,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013742795] [2020-08-21 15:32:34,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:34,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 15:32:34,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315555732] [2020-08-21 15:32:34,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:32:34,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:34,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:32:34,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:32:34,034 INFO L87 Difference]: Start difference. First operand 1791 states and 2197 transitions. Second operand 10 states. [2020-08-21 15:32:35,351 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:35,597 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:32:35,856 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:36,093 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:37,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:37,398 INFO L93 Difference]: Finished difference Result 3586 states and 4823 transitions. [2020-08-21 15:32:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 15:32:37,399 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-08-21 15:32:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:37,412 INFO L225 Difference]: With dead ends: 3586 [2020-08-21 15:32:37,412 INFO L226 Difference]: Without dead ends: 1823 [2020-08-21 15:32:37,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:32:37,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2020-08-21 15:32:37,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1475. [2020-08-21 15:32:37,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1475 states. [2020-08-21 15:32:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 1779 transitions. [2020-08-21 15:32:37,760 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 1779 transitions. Word has length 99 [2020-08-21 15:32:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:37,760 INFO L479 AbstractCegarLoop]: Abstraction has 1475 states and 1779 transitions. [2020-08-21 15:32:37,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:32:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 1779 transitions. [2020-08-21 15:32:37,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 15:32:37,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:37,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:37,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:32:37,765 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:37,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:37,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1816296961, now seen corresponding path program 1 times [2020-08-21 15:32:37,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:37,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572055372] [2020-08-21 15:32:37,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,111 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:32:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:32:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:32:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 15:32:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 15:32:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 15:32:38,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572055372] [2020-08-21 15:32:38,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:32:38,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 15:32:38,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972196352] [2020-08-21 15:32:38,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 15:32:38,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:38,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 15:32:38,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:32:38,360 INFO L87 Difference]: Start difference. First operand 1475 states and 1779 transitions. Second operand 18 states. [2020-08-21 15:32:39,006 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:39,343 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 15:32:39,602 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:32:39,838 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:32:40,530 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:41,185 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:41,580 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:42,669 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:42,999 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:43,441 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:43,705 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:44,281 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 15:32:44,774 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 15:32:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:46,161 INFO L93 Difference]: Finished difference Result 3226 states and 4133 transitions. [2020-08-21 15:32:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-21 15:32:46,162 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-08-21 15:32:46,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:46,174 INFO L225 Difference]: With dead ends: 3226 [2020-08-21 15:32:46,175 INFO L226 Difference]: Without dead ends: 1779 [2020-08-21 15:32:46,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=506, Invalid=2044, Unknown=0, NotChecked=0, Total=2550 [2020-08-21 15:32:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2020-08-21 15:32:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1459. [2020-08-21 15:32:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-08-21 15:32:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1747 transitions. [2020-08-21 15:32:46,459 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1747 transitions. Word has length 103 [2020-08-21 15:32:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:46,461 INFO L479 AbstractCegarLoop]: Abstraction has 1459 states and 1747 transitions. [2020-08-21 15:32:46,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 15:32:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1747 transitions. [2020-08-21 15:32:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-21 15:32:46,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:46,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:46,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:32:46,467 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:46,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1518550128, now seen corresponding path program 1 times [2020-08-21 15:32:46,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:46,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693404852] [2020-08-21 15:32:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,734 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:46,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:32:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:32:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:32:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 15:32:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 15:32:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 15:32:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 15:32:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 15:32:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 15:32:46,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693404852] [2020-08-21 15:32:46,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:32:46,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 15:32:46,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742063258] [2020-08-21 15:32:46,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:32:46,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:46,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:32:46,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:32:46,885 INFO L87 Difference]: Start difference. First operand 1459 states and 1747 transitions. Second operand 9 states. [2020-08-21 15:32:47,258 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:49,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:49,800 INFO L93 Difference]: Finished difference Result 2826 states and 3752 transitions. [2020-08-21 15:32:49,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 15:32:49,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-08-21 15:32:49,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:49,819 INFO L225 Difference]: With dead ends: 2826 [2020-08-21 15:32:49,819 INFO L226 Difference]: Without dead ends: 2823 [2020-08-21 15:32:49,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-08-21 15:32:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2020-08-21 15:32:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2262. [2020-08-21 15:32:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2020-08-21 15:32:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2722 transitions. [2020-08-21 15:32:50,323 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2722 transitions. Word has length 139 [2020-08-21 15:32:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:50,323 INFO L479 AbstractCegarLoop]: Abstraction has 2262 states and 2722 transitions. [2020-08-21 15:32:50,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:32:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2722 transitions. [2020-08-21 15:32:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-08-21 15:32:50,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:50,333 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:50,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:32:50,334 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:50,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:50,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1850969506, now seen corresponding path program 1 times [2020-08-21 15:32:50,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:50,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303752761] [2020-08-21 15:32:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,621 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:32:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:32:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:32:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 15:32:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 15:32:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:32:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:32:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-21 15:32:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 15:32:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 15:32:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-21 15:32:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-21 15:32:50,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303752761] [2020-08-21 15:32:50,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:32:50,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:32:50,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31989140] [2020-08-21 15:32:50,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:32:50,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:50,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:32:50,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:32:50,987 INFO L87 Difference]: Start difference. First operand 2262 states and 2722 transitions. Second operand 12 states. [2020-08-21 15:32:51,452 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:52,065 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:55,019 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:56,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:56,105 INFO L93 Difference]: Finished difference Result 6575 states and 8594 transitions. [2020-08-21 15:32:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-21 15:32:56,106 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 182 [2020-08-21 15:32:56,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:56,134 INFO L225 Difference]: With dead ends: 6575 [2020-08-21 15:32:56,134 INFO L226 Difference]: Without dead ends: 4657 [2020-08-21 15:32:56,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=418, Invalid=1304, Unknown=0, NotChecked=0, Total=1722 [2020-08-21 15:32:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2020-08-21 15:32:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 3630. [2020-08-21 15:32:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3630 states. [2020-08-21 15:32:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 4309 transitions. [2020-08-21 15:32:56,677 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 4309 transitions. Word has length 182 [2020-08-21 15:32:56,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:56,677 INFO L479 AbstractCegarLoop]: Abstraction has 3630 states and 4309 transitions. [2020-08-21 15:32:56,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:32:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 4309 transitions. [2020-08-21 15:32:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-08-21 15:32:56,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:56,760 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:56,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:32:56,760 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:56,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:56,762 INFO L82 PathProgramCache]: Analyzing trace with hash 464766112, now seen corresponding path program 1 times [2020-08-21 15:32:56,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:56,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543408015] [2020-08-21 15:32:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:32:56,831 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:32:56,831 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:32:56,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:32:56,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:32:56 BoogieIcfgContainer [2020-08-21 15:32:56,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:32:56,887 INFO L168 Benchmark]: Toolchain (without parser) took 52991.34 ms. Allocated memory was 138.9 MB in the beginning and 954.2 MB in the end (delta: 815.3 MB). Free memory was 101.1 MB in the beginning and 824.3 MB in the end (delta: -723.2 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:32:56,892 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 15:32:56,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.33 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 173.0 MB in the end (delta: -72.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:32:56,892 INFO L168 Benchmark]: Boogie Preprocessor took 96.15 ms. Allocated memory is still 203.4 MB. Free memory was 173.0 MB in the beginning and 168.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-21 15:32:56,894 INFO L168 Benchmark]: RCFGBuilder took 1127.88 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 168.7 MB in the beginning and 199.1 MB in the end (delta: -30.4 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:32:56,894 INFO L168 Benchmark]: TraceAbstraction took 51086.18 ms. Allocated memory was 235.9 MB in the beginning and 954.2 MB in the end (delta: 718.3 MB). Free memory was 199.1 MB in the beginning and 824.3 MB in the end (delta: -625.2 MB). Peak memory consumption was 93.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:32:56,896 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.33 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 173.0 MB in the end (delta: -72.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.15 ms. Allocated memory is still 203.4 MB. Free memory was 173.0 MB in the beginning and 168.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1127.88 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 168.7 MB in the beginning and 199.1 MB in the end (delta: -30.4 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 51086.18 ms. Allocated memory was 235.9 MB in the beginning and 954.2 MB in the end (delta: 718.3 MB). Free memory was 199.1 MB in the beginning and 824.3 MB in the end (delta: -625.2 MB). Peak memory consumption was 93.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L132] int pumpRunning = 0; [L133] int systemActive = 1; [L364] int cleanupTimeShifts = 4; [L462] int methAndRunningLastTime ; [L502] int waterLevel = 1; [L503] int methaneLevelCritical = 0; [L765] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L439] int retValue_acc ; [L440] int tmp ; [L444] FCALL select_helpers() [L445] FCALL select_features() [L446] CALL, EXPR valid_product() [L355] int retValue_acc ; [L358] retValue_acc = 1 [L359] return (retValue_acc); [L446] RET, EXPR valid_product() [L446] tmp = valid_product() [L448] COND TRUE \read(tmp) [L450] FCALL setup() [L451] CALL runTest() [L432] CALL __utac_acc__Specification2_spec__1() [L467] methAndRunningLastTime = 0 [L432] RET __utac_acc__Specification2_spec__1() [L433] CALL test() [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 [L65] COND TRUE 1 [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) [L77] CALL waterRise() [L520] COND TRUE waterLevel < 2 [L521] waterLevel = waterLevel + 1 [L77] RET waterRise() [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___2)) [L101] tmp___1 = __VERIFIER_nondet_int() [L103] COND FALSE !(\read(tmp___1)) [L112] CALL timeShift() [L140] COND FALSE !(\read(pumpRunning)) [L147] COND TRUE \read(systemActive) [L149] CALL processEnvironment() [L169] int tmp ; [L172] COND TRUE ! pumpRunning [L174] CALL, EXPR isHighWaterLevel() [L284] int retValue_acc ; [L285] int tmp ; [L286] int tmp___0 ; [L290] CALL, EXPR isHighWaterSensorDry() [L582] int retValue_acc ; [L585] COND FALSE !(waterLevel < 2) [L589] retValue_acc = 0 [L590] return (retValue_acc); [L290] RET, EXPR isHighWaterSensorDry() [L290] tmp = isHighWaterSensorDry() [L292] COND FALSE !(\read(tmp)) [L295] tmp___0 = 1 [L297] retValue_acc = tmp___0 [L298] return (retValue_acc); [L174] RET, EXPR isHighWaterLevel() [L174] tmp = isHighWaterLevel() [L176] COND TRUE \read(tmp) [L178] CALL activatePump() [L203] int tmp ; [L207] CALL, EXPR isMethaneAlarm() [L228] int retValue_acc ; [L232] CALL, EXPR isMethaneLevelCritical() [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] return (retValue_acc); [L232] RET, EXPR isMethaneLevelCritical() [L232] retValue_acc = isMethaneLevelCritical() [L234] return (retValue_acc); [L207] RET, EXPR isMethaneAlarm() [L207] tmp = isMethaneAlarm() [L209] COND FALSE !(\read(tmp)) [L213] CALL activatePump__wrappee__highWaterSensor() [L197] pumpRunning = 1 [L213] RET activatePump__wrappee__highWaterSensor() [L178] RET activatePump() [L149] RET processEnvironment() [L155] CALL __utac_acc__Specification2_spec__2() [L472] int tmp ; [L473] int tmp___0 ; [L477] CALL, EXPR isMethaneLevelCritical() [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] return (retValue_acc); [L477] RET, EXPR isMethaneLevelCritical() [L477] tmp = isMethaneLevelCritical() [L479] COND FALSE !(\read(tmp)) [L495] methAndRunningLastTime = 0 [L155] RET __utac_acc__Specification2_spec__2() [L112] RET timeShift() [L65] COND TRUE 1 [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___0) [L87] CALL changeMethaneLevel() [L532] COND FALSE !(\read(methaneLevelCritical)) [L535] methaneLevelCritical = 1 [L87] RET changeMethaneLevel() [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___2)) [L101] tmp___1 = __VERIFIER_nondet_int() [L103] COND FALSE !(\read(tmp___1)) [L112] CALL timeShift() [L140] COND TRUE \read(pumpRunning) [L142] CALL lowerWaterLevel() [L508] COND TRUE waterLevel > 0 [L509] waterLevel = waterLevel - 1 [L142] RET lowerWaterLevel() [L147] COND TRUE \read(systemActive) [L149] CALL processEnvironment() [L169] int tmp ; [L172] COND FALSE !(! pumpRunning) [L187] FCALL processEnvironment__wrappee__base() [L149] RET processEnvironment() [L155] CALL __utac_acc__Specification2_spec__2() [L472] int tmp ; [L473] int tmp___0 ; [L477] CALL, EXPR isMethaneLevelCritical() [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] return (retValue_acc); [L477] RET, EXPR isMethaneLevelCritical() [L477] tmp = isMethaneLevelCritical() [L479] COND TRUE \read(tmp) [L481] CALL, EXPR isPumpRunning() [L239] int retValue_acc ; [L242] retValue_acc = pumpRunning [L243] return (retValue_acc); [L481] RET, EXPR isPumpRunning() [L481] tmp___0 = isPumpRunning() [L483] COND TRUE \read(tmp___0) [L484] COND FALSE !(\read(methAndRunningLastTime)) [L489] methAndRunningLastTime = 1 [L155] RET __utac_acc__Specification2_spec__2() [L112] RET timeShift() [L65] COND TRUE 1 [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___2)) [L101] tmp___1 = __VERIFIER_nondet_int() [L103] COND FALSE !(\read(tmp___1)) [L112] CALL timeShift() [L140] COND TRUE \read(pumpRunning) [L142] CALL lowerWaterLevel() [L508] COND TRUE waterLevel > 0 [L509] waterLevel = waterLevel - 1 [L142] RET lowerWaterLevel() [L147] COND TRUE \read(systemActive) [L149] CALL processEnvironment() [L169] int tmp ; [L172] COND FALSE !(! pumpRunning) [L187] FCALL processEnvironment__wrappee__base() [L149] RET processEnvironment() [L155] CALL __utac_acc__Specification2_spec__2() [L472] int tmp ; [L473] int tmp___0 ; [L477] CALL, EXPR isMethaneLevelCritical() [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] return (retValue_acc); [L477] RET, EXPR isMethaneLevelCritical() [L477] tmp = isMethaneLevelCritical() [L479] COND TRUE \read(tmp) [L481] CALL, EXPR isPumpRunning() [L239] int retValue_acc ; [L242] retValue_acc = pumpRunning [L243] return (retValue_acc); [L481] RET, EXPR isPumpRunning() [L481] tmp___0 = isPumpRunning() [L483] COND TRUE \read(tmp___0) [L484] COND TRUE \read(methAndRunningLastTime) [L486] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 237 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.9s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 41.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1485 SDtfs, 5117 SDslu, 1963 SDs, 0 SdLazy, 10457 SolverSat, 4225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 632 GetRequests, 385 SyntacticMatches, 8 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 15.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3630occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 3714 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1191 NumberOfCodeBlocks, 1191 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 998 ConstructedInterpolants, 0 QuantifiedInterpolants, 370978 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 119/145 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...