/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=LOWLEXORDER --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_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:57:40,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:57:40,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:57:40,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:57:40,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:57:40,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:57:40,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:57:40,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:57:40,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:57:40,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:57:40,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:57:40,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:57:40,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:57:40,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:57:40,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:57:40,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:57:40,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:57:40,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:57:40,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:57:40,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:57:40,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:57:40,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:57:40,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:57:40,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:57:40,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:57:40,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:57:40,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:57:40,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:57:40,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:57:40,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:57:40,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:57:40,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:57:40,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:57:40,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:57:40,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:57:40,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:57:40,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:57:40,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:57:40,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:57:40,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:57:40,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:57:40,600 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 17:57:40,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:57:40,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:57:40,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:57:40,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:57:40,625 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:57:40,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:57:40,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:57:40,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:57:40,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:57:40,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:57:40,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:57:40,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:57:40,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:57:40,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:57:40,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:57:40,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:57:40,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:57:40,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:57:40,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:57:40,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:57:40,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:57:40,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:57:40,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:57:40,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:57:40,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:57:40,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:57:40,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:57:40,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:57:40,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:57:40,630 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:57:40,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:57:40,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:57:40,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:57:40,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:57:40,972 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:57:40,973 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-21 17:57:41,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deeb1bb5f/4e840476ffab4ee49215bdd83751be49/FLAGc80608e44 [2020-08-21 17:57:41,613 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:57:41,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-21 17:57:41,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deeb1bb5f/4e840476ffab4ee49215bdd83751be49/FLAGc80608e44 [2020-08-21 17:57:41,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deeb1bb5f/4e840476ffab4ee49215bdd83751be49 [2020-08-21 17:57:41,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:57:41,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:57:41,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:57:41,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:57:41,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:57:41,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:57:41" (1/1) ... [2020-08-21 17:57:41,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415d1520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:41, skipping insertion in model container [2020-08-21 17:57:41,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:57:41" (1/1) ... [2020-08-21 17:57:41,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:57:42,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:57:42,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:57:42,418 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:57:42,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:57:42,557 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:57:42,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:42 WrapperNode [2020-08-21 17:57:42,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:57:42,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:57:42,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:57:42,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:57:42,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:42" (1/1) ... [2020-08-21 17:57:42,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:42" (1/1) ... [2020-08-21 17:57:42,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:42" (1/1) ... [2020-08-21 17:57:42,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:42" (1/1) ... [2020-08-21 17:57:42,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:42" (1/1) ... [2020-08-21 17:57:42,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:42" (1/1) ... [2020-08-21 17:57:42,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:42" (1/1) ... [2020-08-21 17:57:42,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:57:42,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:57:42,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:57:42,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:57:42,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:42" (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 17:57:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:57:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:57:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:57:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:57:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:57:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:57:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:57:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:57:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:57:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:57:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:57:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:57:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:57:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:57:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:57:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:57:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:57:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 17:57:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 17:57:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 17:57:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:57:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:57:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:57:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 17:57:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:57:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:57:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:57:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:57:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:57:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:57:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:57:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 17:57:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 17:57:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:57:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:57:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:57:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:57:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:57:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:57:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:57:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:57:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:57:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:57:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:57:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:57:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:57:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:57:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:57:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:57:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:57:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:57:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:57:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:57:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:57:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:57:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:57:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:57:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:57:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:57:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:57:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:57:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:57:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:57:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:57:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:57:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:57:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:57:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:57:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:57:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:57:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:57:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:57:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 17:57:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:57:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 17:57:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 17:57:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:57:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:57:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:57:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:57:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 17:57:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:57:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:57:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:57:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:57:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:57:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 17:57:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 17:57:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:57:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:57:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:57:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:57:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:57:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:57:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:57:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:57:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:57:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:57:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:57:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:57:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:57:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:57:43,935 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:57:43,935 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:57:43,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:57:43 BoogieIcfgContainer [2020-08-21 17:57:43,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:57:43,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:57:43,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:57:43,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:57:43,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:57:41" (1/3) ... [2020-08-21 17:57:43,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44519adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:57:43, skipping insertion in model container [2020-08-21 17:57:43,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:42" (2/3) ... [2020-08-21 17:57:43,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44519adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:57:43, skipping insertion in model container [2020-08-21 17:57:43,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:57:43" (3/3) ... [2020-08-21 17:57:43,950 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-21 17:57:43,961 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:57:43,969 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:57:43,983 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:57:44,009 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:57:44,009 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:57:44,009 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:57:44,010 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:57:44,010 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:57:44,010 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:57:44,010 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:57:44,010 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:57:44,034 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-21 17:57:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 17:57:44,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:44,051 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 17:57:44,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:44,058 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-21 17:57:44,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:44,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589383275] [2020-08-21 17:57:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:44,731 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:44,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:44,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:44,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:57:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:44,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:57:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:44,857 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 17:57:44,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589383275] [2020-08-21 17:57:44,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:44,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:57:44,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48678012] [2020-08-21 17:57:44,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:57:44,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:44,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:57:44,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:57:44,888 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-21 17:57:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:46,377 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-21 17:57:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:57:46,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 17:57:46,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:46,393 INFO L225 Difference]: With dead ends: 353 [2020-08-21 17:57:46,394 INFO L226 Difference]: Without dead ends: 196 [2020-08-21 17:57:46,399 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 17:57:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-21 17:57:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-21 17:57:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-21 17:57:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-21 17:57:46,531 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-21 17:57:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:46,534 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-21 17:57:46,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:57:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-21 17:57:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:57:46,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:46,541 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 17:57:46,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:57:46,542 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:46,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:46,542 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-21 17:57:46,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:46,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199197560] [2020-08-21 17:57:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:46,949 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:46,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:46,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:57:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:57:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,033 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 17:57:47,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199197560] [2020-08-21 17:57:47,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:47,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:57:47,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235149023] [2020-08-21 17:57:47,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:57:47,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:47,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:57:47,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:57:47,038 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-21 17:57:47,511 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:48,687 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-21 17:57:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:57:48,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 17:57:48,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:48,692 INFO L225 Difference]: With dead ends: 288 [2020-08-21 17:57:48,693 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 17:57:48,695 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 17:57:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 17:57:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-21 17:57:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-21 17:57:48,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-21 17:57:48,743 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-21 17:57:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:48,744 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-21 17:57:48,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:57:48,744 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-21 17:57:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 17:57:48,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:48,747 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 17:57:48,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:57:48,747 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:48,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-21 17:57:48,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:48,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690670918] [2020-08-21 17:57:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:49,118 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:49,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:49,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:49,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:49,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:49,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:57:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:49,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:57:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:49,223 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 17:57:49,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690670918] [2020-08-21 17:57:49,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:49,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:57:49,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686377870] [2020-08-21 17:57:49,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:57:49,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:49,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:57:49,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:57:49,235 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-21 17:57:49,635 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:49,918 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:50,179 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:50,440 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:51,225 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:53,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:53,630 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-21 17:57:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:57:53,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 17:57:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:53,643 INFO L225 Difference]: With dead ends: 503 [2020-08-21 17:57:53,643 INFO L226 Difference]: Without dead ends: 382 [2020-08-21 17:57:53,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:57:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-21 17:57:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-21 17:57:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-21 17:57:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-21 17:57:53,744 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-21 17:57:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:53,745 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-21 17:57:53,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:57:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-21 17:57:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 17:57:53,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:53,749 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 17:57:53,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:57:53,749 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:53,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:53,749 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-21 17:57:53,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:53,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946218159] [2020-08-21 17:57:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:54,083 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:54,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:54,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:54,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:54,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:54,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:54,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:57:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:54,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:57:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:54,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 17:57:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:54,195 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 17:57:54,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946218159] [2020-08-21 17:57:54,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:54,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:57:54,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688382415] [2020-08-21 17:57:54,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:57:54,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:54,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:57:54,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:57:54,198 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-21 17:57:54,539 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:55,561 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:56,012 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:56,264 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:56,510 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:58,335 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-21 17:57:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 17:57:58,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 17:57:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:58,342 INFO L225 Difference]: With dead ends: 992 [2020-08-21 17:57:58,343 INFO L226 Difference]: Without dead ends: 711 [2020-08-21 17:57:58,345 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 17:57:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-21 17:57:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-21 17:57:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-21 17:57:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-21 17:57:58,477 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-21 17:57:58,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:58,478 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-21 17:57:58,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:57:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-21 17:57:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 17:57:58,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:58,482 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 17:57:58,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:57:58,482 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:58,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:58,483 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-21 17:57:58,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:58,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98673900] [2020-08-21 17:57:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,753 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:58,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 17:57:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:57:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 17:57:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:58,875 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 17:57:58,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98673900] [2020-08-21 17:57:58,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:58,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:57:58,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801494407] [2020-08-21 17:57:58,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:57:58,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:58,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:57:58,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:57:58,880 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-21 17:57:59,218 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:00,283 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:00,553 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:00,804 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:01,526 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:02,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:02,974 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-21 17:58:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 17:58:02,975 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 17:58:02,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:02,983 INFO L225 Difference]: With dead ends: 1565 [2020-08-21 17:58:02,983 INFO L226 Difference]: Without dead ends: 1027 [2020-08-21 17:58:02,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 17:58:02,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-21 17:58:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-21 17:58:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-21 17:58:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-21 17:58:03,216 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-21 17:58:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:03,219 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-21 17:58:03,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:58:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-21 17:58:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 17:58:03,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:03,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:03,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:58:03,225 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:03,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-21 17:58:03,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:03,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928896271] [2020-08-21 17:58:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,501 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:03,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:58:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:58:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 17:58:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:58:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:03,693 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 17:58:03,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928896271] [2020-08-21 17:58:03,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:03,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:58:03,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970260108] [2020-08-21 17:58:03,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:58:03,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:03,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:58:03,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:58:03,698 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-21 17:58:04,820 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:05,087 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:58:05,337 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:05,593 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:06,926 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-21 17:58:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:58:06,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-21 17:58:06,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:06,936 INFO L225 Difference]: With dead ends: 1894 [2020-08-21 17:58:06,937 INFO L226 Difference]: Without dead ends: 1101 [2020-08-21 17:58:06,940 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 17:58:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-21 17:58:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-21 17:58:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-21 17:58:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-21 17:58:07,131 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-21 17:58:07,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:07,131 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-21 17:58:07,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:58:07,132 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-21 17:58:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 17:58:07,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:07,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:07,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:58:07,135 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:07,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-21 17:58:07,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:07,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017615138] [2020-08-21 17:58:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,417 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:58:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:58:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 17:58:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:58:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,594 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 17:58:07,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017615138] [2020-08-21 17:58:07,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:07,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:58:07,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939172493] [2020-08-21 17:58:07,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:58:07,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:07,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:58:07,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:58:07,602 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-21 17:58:08,221 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:08,458 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:08,696 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:09,523 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:09,789 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:10,040 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:11,553 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-21 17:58:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:58:11,554 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-21 17:58:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:11,562 INFO L225 Difference]: With dead ends: 1948 [2020-08-21 17:58:11,562 INFO L226 Difference]: Without dead ends: 1129 [2020-08-21 17:58:11,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 17:58:11,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-21 17:58:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-21 17:58:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-21 17:58:11,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-21 17:58:11,708 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-21 17:58:11,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:11,708 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-21 17:58:11,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:58:11,709 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-21 17:58:11,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 17:58:11,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:11,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:11,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:58:11,712 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:11,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:11,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-21 17:58:11,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:11,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706272497] [2020-08-21 17:58:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,981 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:11,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:58:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:58:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 17:58:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:58:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:12,136 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 17:58:12,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706272497] [2020-08-21 17:58:12,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:12,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:58:12,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288288568] [2020-08-21 17:58:12,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:58:12,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:12,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:58:12,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:58:12,138 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-21 17:58:12,594 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:13,339 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:16,390 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-21 17:58:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 17:58:16,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-21 17:58:16,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:16,405 INFO L225 Difference]: With dead ends: 2919 [2020-08-21 17:58:16,405 INFO L226 Difference]: Without dead ends: 2084 [2020-08-21 17:58:16,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-21 17:58:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-21 17:58:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-21 17:58:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-21 17:58:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-21 17:58:16,845 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-21 17:58:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:16,846 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-21 17:58:16,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:58:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-21 17:58:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 17:58:16,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:16,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:16,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:58:16,852 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:16,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:16,853 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-21 17:58:16,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:16,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484410538] [2020-08-21 17:58:16,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,104 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:17,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:58:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 17:58:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:58:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:17,211 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 17:58:17,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484410538] [2020-08-21 17:58:17,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:17,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:58:17,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504924854] [2020-08-21 17:58:17,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:58:17,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:17,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:58:17,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:58:17,213 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-21 17:58:17,583 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:21,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:21,014 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-21 17:58:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 17:58:21,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-21 17:58:21,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:21,039 INFO L225 Difference]: With dead ends: 3491 [2020-08-21 17:58:21,039 INFO L226 Difference]: Without dead ends: 3488 [2020-08-21 17:58:21,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 17:58:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-21 17:58:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-21 17:58:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-21 17:58:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-21 17:58:21,614 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-21 17:58:21,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:21,616 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-21 17:58:21,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:58:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-21 17:58:21,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-21 17:58:21,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:21,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:21,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:58:21,628 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:21,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:21,628 INFO L82 PathProgramCache]: Analyzing trace with hash 2137087651, now seen corresponding path program 1 times [2020-08-21 17:58:21,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:21,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973635003] [2020-08-21 17:58:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:21,906 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:21,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:21,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:21,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:21,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:58:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:58:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:58:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 17:58:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 17:58:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-21 17:58:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 17:58:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-08-21 17:58:22,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973635003] [2020-08-21 17:58:22,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:58:22,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 17:58:22,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760899829] [2020-08-21 17:58:22,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 17:58:22,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:22,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 17:58:22,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:58:22,140 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 14 states. [2020-08-21 17:58:22,688 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:22,919 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:23,136 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:23,683 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:25,326 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:27,920 INFO L93 Difference]: Finished difference Result 5611 states and 7325 transitions. [2020-08-21 17:58:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-21 17:58:27,920 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2020-08-21 17:58:27,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:27,940 INFO L225 Difference]: With dead ends: 5611 [2020-08-21 17:58:27,940 INFO L226 Difference]: Without dead ends: 3113 [2020-08-21 17:58:27,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=364, Invalid=1528, Unknown=0, NotChecked=0, Total=1892 [2020-08-21 17:58:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2020-08-21 17:58:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 2736. [2020-08-21 17:58:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2020-08-21 17:58:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3204 transitions. [2020-08-21 17:58:28,404 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3204 transitions. Word has length 166 [2020-08-21 17:58:28,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:28,405 INFO L479 AbstractCegarLoop]: Abstraction has 2736 states and 3204 transitions. [2020-08-21 17:58:28,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 17:58:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3204 transitions. [2020-08-21 17:58:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-21 17:58:28,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:28,413 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:28,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:58:28,414 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:28,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:28,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-21 17:58:28,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:28,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755476486] [2020-08-21 17:58:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,717 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:28,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:58:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:58:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:58:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 17:58:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 17:58:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-21 17:58:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-21 17:58:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-21 17:58:28,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755476486] [2020-08-21 17:58:28,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:58:28,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 17:58:28,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718979555] [2020-08-21 17:58:28,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:58:28,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:28,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:58:28,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:58:28,914 INFO L87 Difference]: Start difference. First operand 2736 states and 3204 transitions. Second operand 10 states. [2020-08-21 17:58:29,898 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:32,381 INFO L93 Difference]: Finished difference Result 4533 states and 5525 transitions. [2020-08-21 17:58:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-21 17:58:32,381 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-21 17:58:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:32,392 INFO L225 Difference]: With dead ends: 4533 [2020-08-21 17:58:32,392 INFO L226 Difference]: Without dead ends: 1835 [2020-08-21 17:58:32,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 17:58:32,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-21 17:58:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1269. [2020-08-21 17:58:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-21 17:58:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1471 transitions. [2020-08-21 17:58:32,654 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1471 transitions. Word has length 171 [2020-08-21 17:58:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:32,655 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1471 transitions. [2020-08-21 17:58:32,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:58:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1471 transitions. [2020-08-21 17:58:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-21 17:58:32,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:32,660 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:58:32,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:58:32,660 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:32,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:32,661 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-21 17:58:32,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:32,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271632222] [2020-08-21 17:58:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:32,936 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:32,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:32,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:32,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:32,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:32,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:58:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:58:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:58:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 17:58:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 17:58:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:58:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:58:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 17:58:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 17:58:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-21 17:58:33,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271632222] [2020-08-21 17:58:33,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:58:33,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 17:58:33,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661497088] [2020-08-21 17:58:33,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 17:58:33,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:33,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 17:58:33,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:58:33,276 INFO L87 Difference]: Start difference. First operand 1269 states and 1471 transitions. Second operand 19 states. [2020-08-21 17:58:34,236 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:34,566 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:58:34,832 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:58:35,069 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:58:35,910 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:36,534 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:36,950 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:39,382 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:39,642 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:39,923 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:40,182 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:40,450 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191