/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:30:01,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:30:01,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:30:01,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:30:01,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:30:01,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:30:01,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:30:01,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:30:01,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:30:01,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:30:01,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:30:01,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:30:01,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:30:01,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:30:01,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:30:01,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:30:01,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:30:01,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:30:01,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:30:01,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:30:01,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:30:01,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:30:01,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:30:01,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:30:01,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:30:01,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:30:01,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:30:01,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:30:01,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:30:01,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:30:01,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:30:01,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:30:01,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:30:01,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:30:01,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:30:01,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:30:01,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:30:01,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:30:01,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:30:01,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:30:01,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:30:01,570 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 [2020-08-18 18:30:01,608 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:30:01,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:30:01,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:30:01,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:30:01,611 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:30:01,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:30:01,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:30:01,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:30:01,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:30:01,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:30:01,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:30:01,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:30:01,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:30:01,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:30:01,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:30:01,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:30:01,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:30:01,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:30:01,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:30:01,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:30:01,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:30:01,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:30:01,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:30:01,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:30:01,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:30:01,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:30:01,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:30:01,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:30:01,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:30:01,617 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=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:30:01,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:30:01,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:30:01,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:30:01,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:30:01,929 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:30:01,930 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2020-08-18 18:30:02,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad07db189/0598a61357b1467fa98ab83ffb804bd6/FLAG01fd7879c [2020-08-18 18:30:02,531 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:30:02,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2020-08-18 18:30:02,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad07db189/0598a61357b1467fa98ab83ffb804bd6/FLAG01fd7879c [2020-08-18 18:30:02,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad07db189/0598a61357b1467fa98ab83ffb804bd6 [2020-08-18 18:30:02,772 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:30:02,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:30:02,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:30:02,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:30:02,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:30:02,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:30:02" (1/1) ... [2020-08-18 18:30:02,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19fb1f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:02, skipping insertion in model container [2020-08-18 18:30:02,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:30:02" (1/1) ... [2020-08-18 18:30:02,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:30:02,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:30:03,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:30:03,360 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:30:03,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:30:03,506 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:30:03,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:03 WrapperNode [2020-08-18 18:30:03,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:30:03,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:30:03,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:30:03,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:30:03,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:03" (1/1) ... [2020-08-18 18:30:03,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:03" (1/1) ... [2020-08-18 18:30:03,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:03" (1/1) ... [2020-08-18 18:30:03,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:03" (1/1) ... [2020-08-18 18:30:03,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:03" (1/1) ... [2020-08-18 18:30:03,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:03" (1/1) ... [2020-08-18 18:30:03,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:03" (1/1) ... [2020-08-18 18:30:03,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:30:03,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:30:03,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:30:03,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:30:03,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:03" (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 [2020-08-18 18:30:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:30:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:30:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:30:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:30:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:30:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:30:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:30:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:30:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:30:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:30:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:30:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:30:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:30:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:30:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:30:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 18:30:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 18:30:03,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 18:30:03,660 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:30:03,660 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:30:03,660 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:30:03,660 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:30:03,660 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:30:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:30:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:30:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:30:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:30:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:30:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:30:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 18:30:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:30:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:30:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:30:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:30:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:30:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:30:03,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:30:03,663 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:30:03,663 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:30:03,663 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:30:03,663 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:30:03,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:30:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:30:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:30:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:30:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:30:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:30:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:30:03,665 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:30:03,665 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:30:03,665 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:30:03,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 18:30:03,665 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:30:03,665 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:30:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:30:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:30:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:30:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:30:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:30:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:30:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:30:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:30:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:30:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 18:30:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:30:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:30:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:30:03,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 18:30:03,668 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:30:03,668 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:30:03,668 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:30:03,668 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:30:03,668 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:30:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:30:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 18:30:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:30:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:30:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:30:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:30:03,669 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:30:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:30:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:30:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:30:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:30:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:30:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:30:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:30:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:30:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:30:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:30:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:30:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:30:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:30:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:30:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:30:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:30:04,729 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:30:04,729 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:30:04,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:30:04 BoogieIcfgContainer [2020-08-18 18:30:04,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:30:04,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:30:04,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:30:04,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:30:04,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:30:02" (1/3) ... [2020-08-18 18:30:04,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ad821c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:30:04, skipping insertion in model container [2020-08-18 18:30:04,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:03" (2/3) ... [2020-08-18 18:30:04,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ad821c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:30:04, skipping insertion in model container [2020-08-18 18:30:04,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:30:04" (3/3) ... [2020-08-18 18:30:04,743 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product49.cil.c [2020-08-18 18:30:04,753 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:30:04,761 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:30:04,774 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:30:04,796 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:30:04,796 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:30:04,796 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:30:04,796 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:30:04,796 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:30:04,796 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:30:04,797 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:30:04,797 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:30:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-18 18:30:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 18:30:04,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:04,830 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] [2020-08-18 18:30:04,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:04,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:04,836 INFO L82 PathProgramCache]: Analyzing trace with hash -154299971, now seen corresponding path program 1 times [2020-08-18 18:30:04,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:04,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798240407] [2020-08-18 18:30:04,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,506 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:05,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:30:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 18:30:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:05,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798240407] [2020-08-18 18:30:05,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:05,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:30:05,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402176042] [2020-08-18 18:30:05,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:30:05,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:05,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:30:05,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:30:05,647 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2020-08-18 18:30:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:06,792 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-18 18:30:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:30:06,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 18:30:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:06,809 INFO L225 Difference]: With dead ends: 296 [2020-08-18 18:30:06,809 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 18:30:06,813 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 [2020-08-18 18:30:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 18:30:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 133. [2020-08-18 18:30:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 18:30:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2020-08-18 18:30:06,908 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 51 [2020-08-18 18:30:06,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:06,909 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2020-08-18 18:30:06,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:30:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2020-08-18 18:30:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 18:30:06,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:06,913 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] [2020-08-18 18:30:06,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:30:06,914 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash 401693438, now seen corresponding path program 1 times [2020-08-18 18:30:06,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:06,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619113092] [2020-08-18 18:30:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:07,239 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:07,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:07,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:07,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:07,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:07,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:30:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:07,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:07,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619113092] [2020-08-18 18:30:07,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:07,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:30:07,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118334975] [2020-08-18 18:30:07,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:30:07,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:07,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:30:07,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:30:07,293 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 5 states. [2020-08-18 18:30:07,729 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:08,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:08,596 INFO L93 Difference]: Finished difference Result 241 states and 296 transitions. [2020-08-18 18:30:08,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:30:08,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 18:30:08,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:08,601 INFO L225 Difference]: With dead ends: 241 [2020-08-18 18:30:08,601 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 18:30:08,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:30:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 18:30:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-08-18 18:30:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 18:30:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-18 18:30:08,640 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2020-08-18 18:30:08,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:08,641 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-18 18:30:08,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:30:08,641 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-18 18:30:08,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 18:30:08,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:08,643 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] [2020-08-18 18:30:08,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:30:08,644 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:08,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1332267464, now seen corresponding path program 1 times [2020-08-18 18:30:08,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:08,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473510504] [2020-08-18 18:30:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,994 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:30:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:30:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:09,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473510504] [2020-08-18 18:30:09,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:09,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:30:09,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392586390] [2020-08-18 18:30:09,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:30:09,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:09,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:30:09,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:30:09,082 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 9 states. [2020-08-18 18:30:09,456 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:09,807 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:10,060 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:10,295 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:11,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:11,462 INFO L93 Difference]: Finished difference Result 250 states and 311 transitions. [2020-08-18 18:30:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:30:11,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 18:30:11,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:11,466 INFO L225 Difference]: With dead ends: 250 [2020-08-18 18:30:11,466 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 18:30:11,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:30:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 18:30:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-08-18 18:30:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 18:30:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-18 18:30:11,503 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 56 [2020-08-18 18:30:11,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:11,503 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-18 18:30:11,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:30:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-18 18:30:11,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 18:30:11,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:11,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:11,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:30:11,507 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:11,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:11,507 INFO L82 PathProgramCache]: Analyzing trace with hash -877153324, now seen corresponding path program 1 times [2020-08-18 18:30:11,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:11,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859429682] [2020-08-18 18:30:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,825 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:11,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:30:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 18:30:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 18:30:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:11,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859429682] [2020-08-18 18:30:11,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:11,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:30:11,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805189770] [2020-08-18 18:30:11,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:30:11,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:30:11,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:30:11,918 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 7 states. [2020-08-18 18:30:12,270 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:13,477 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:14,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:14,172 INFO L93 Difference]: Finished difference Result 344 states and 433 transitions. [2020-08-18 18:30:14,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:30:14,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-18 18:30:14,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:14,175 INFO L225 Difference]: With dead ends: 344 [2020-08-18 18:30:14,175 INFO L226 Difference]: Without dead ends: 248 [2020-08-18 18:30:14,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:30:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-18 18:30:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 202. [2020-08-18 18:30:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-18 18:30:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2020-08-18 18:30:14,264 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 69 [2020-08-18 18:30:14,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:14,265 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2020-08-18 18:30:14,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:30:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2020-08-18 18:30:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 18:30:14,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:14,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:14,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:30:14,271 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:14,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:14,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1061705923, now seen corresponding path program 1 times [2020-08-18 18:30:14,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:14,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081844519] [2020-08-18 18:30:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,648 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:30:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 18:30:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 18:30:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:14,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081844519] [2020-08-18 18:30:14,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:14,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:30:14,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93291608] [2020-08-18 18:30:14,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:30:14,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:14,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:30:14,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:30:14,754 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 9 states. [2020-08-18 18:30:15,135 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:16,290 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:16,566 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:16,805 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:17,026 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:17,987 INFO L93 Difference]: Finished difference Result 597 states and 752 transitions. [2020-08-18 18:30:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 18:30:17,988 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 18:30:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:17,995 INFO L225 Difference]: With dead ends: 597 [2020-08-18 18:30:17,996 INFO L226 Difference]: Without dead ends: 423 [2020-08-18 18:30:17,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 18:30:18,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-18 18:30:18,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 352. [2020-08-18 18:30:18,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-08-18 18:30:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 404 transitions. [2020-08-18 18:30:18,097 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 404 transitions. Word has length 83 [2020-08-18 18:30:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:18,098 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 404 transitions. [2020-08-18 18:30:18,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:30:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 404 transitions. [2020-08-18 18:30:18,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 18:30:18,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:18,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:18,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:30:18,100 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:18,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:18,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1506381919, now seen corresponding path program 1 times [2020-08-18 18:30:18,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:18,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813100671] [2020-08-18 18:30:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,406 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:18,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 18:30:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 18:30:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:18,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813100671] [2020-08-18 18:30:18,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:18,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:30:18,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464932918] [2020-08-18 18:30:18,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:30:18,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:18,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:30:18,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:30:18,592 INFO L87 Difference]: Start difference. First operand 352 states and 404 transitions. Second operand 10 states. [2020-08-18 18:30:19,074 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:20,147 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:20,362 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:20,640 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:20,932 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:22,052 INFO L93 Difference]: Finished difference Result 782 states and 967 transitions. [2020-08-18 18:30:22,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 18:30:22,052 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-18 18:30:22,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:22,057 INFO L225 Difference]: With dead ends: 782 [2020-08-18 18:30:22,057 INFO L226 Difference]: Without dead ends: 458 [2020-08-18 18:30:22,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 18:30:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-08-18 18:30:22,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 351. [2020-08-18 18:30:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-18 18:30:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2020-08-18 18:30:22,152 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 87 [2020-08-18 18:30:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:22,153 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2020-08-18 18:30:22,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:30:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2020-08-18 18:30:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 18:30:22,155 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:22,155 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] [2020-08-18 18:30:22,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:30:22,155 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:22,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1049604760, now seen corresponding path program 1 times [2020-08-18 18:30:22,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:22,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063729247] [2020-08-18 18:30:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,399 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:22,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:30:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 18:30:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:22,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063729247] [2020-08-18 18:30:22,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:22,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:30:22,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505697215] [2020-08-18 18:30:22,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:30:22,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:22,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:30:22,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:30:22,589 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 10 states. [2020-08-18 18:30:23,494 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:23,749 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:30:24,001 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:24,251 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:25,154 INFO L93 Difference]: Finished difference Result 785 states and 976 transitions. [2020-08-18 18:30:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 18:30:25,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 18:30:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:25,163 INFO L225 Difference]: With dead ends: 785 [2020-08-18 18:30:25,164 INFO L226 Difference]: Without dead ends: 462 [2020-08-18 18:30:25,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:30:25,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-18 18:30:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 361. [2020-08-18 18:30:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 18:30:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 411 transitions. [2020-08-18 18:30:25,233 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 411 transitions. Word has length 88 [2020-08-18 18:30:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:25,233 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 411 transitions. [2020-08-18 18:30:25,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:30:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 411 transitions. [2020-08-18 18:30:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 18:30:25,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:25,235 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] [2020-08-18 18:30:25,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:30:25,236 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:25,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:25,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1751204634, now seen corresponding path program 1 times [2020-08-18 18:30:25,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:25,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127655402] [2020-08-18 18:30:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,590 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:30:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 18:30:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:25,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127655402] [2020-08-18 18:30:25,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:25,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:30:25,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835971966] [2020-08-18 18:30:25,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:30:25,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:25,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:30:25,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:30:25,780 INFO L87 Difference]: Start difference. First operand 361 states and 411 transitions. Second operand 12 states. [2020-08-18 18:30:26,339 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:26,594 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:26,839 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:27,473 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:27,718 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:27,972 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:29,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:29,153 INFO L93 Difference]: Finished difference Result 809 states and 1018 transitions. [2020-08-18 18:30:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:30:29,154 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-18 18:30:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:29,158 INFO L225 Difference]: With dead ends: 809 [2020-08-18 18:30:29,158 INFO L226 Difference]: Without dead ends: 476 [2020-08-18 18:30:29,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 18:30:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-18 18:30:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2020-08-18 18:30:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-18 18:30:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 419 transitions. [2020-08-18 18:30:29,222 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 419 transitions. Word has length 88 [2020-08-18 18:30:29,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:29,222 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 419 transitions. [2020-08-18 18:30:29,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:30:29,222 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 419 transitions. [2020-08-18 18:30:29,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 18:30:29,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:29,224 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] [2020-08-18 18:30:29,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:30:29,224 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:29,225 INFO L82 PathProgramCache]: Analyzing trace with hash -818281765, now seen corresponding path program 1 times [2020-08-18 18:30:29,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:29,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443559677] [2020-08-18 18:30:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,515 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:30:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 18:30:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:29,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443559677] [2020-08-18 18:30:29,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:29,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:30:29,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864590119] [2020-08-18 18:30:29,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:30:29,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:29,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:30:29,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:30:29,743 INFO L87 Difference]: Start difference. First operand 369 states and 419 transitions. Second operand 8 states. [2020-08-18 18:30:30,405 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:31,102 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:33,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:33,153 INFO L93 Difference]: Finished difference Result 1128 states and 1469 transitions. [2020-08-18 18:30:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 18:30:33,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-18 18:30:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:33,160 INFO L225 Difference]: With dead ends: 1128 [2020-08-18 18:30:33,160 INFO L226 Difference]: Without dead ends: 787 [2020-08-18 18:30:33,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-18 18:30:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-18 18:30:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 655. [2020-08-18 18:30:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-18 18:30:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 773 transitions. [2020-08-18 18:30:33,303 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 773 transitions. Word has length 88 [2020-08-18 18:30:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:33,305 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 773 transitions. [2020-08-18 18:30:33,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:30:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 773 transitions. [2020-08-18 18:30:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 18:30:33,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:33,309 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] [2020-08-18 18:30:33,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:30:33,309 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:33,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:33,310 INFO L82 PathProgramCache]: Analyzing trace with hash -470187979, now seen corresponding path program 1 times [2020-08-18 18:30:33,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:33,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289251972] [2020-08-18 18:30:33,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,671 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:33,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:30:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:30:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 18:30:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 18:30:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:33,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289251972] [2020-08-18 18:30:33,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:33,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:30:33,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259149823] [2020-08-18 18:30:33,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:30:33,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:33,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:30:33,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:30:33,813 INFO L87 Difference]: Start difference. First operand 655 states and 773 transitions. Second operand 8 states. [2020-08-18 18:30:34,374 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:36,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:36,837 INFO L93 Difference]: Finished difference Result 1292 states and 1674 transitions. [2020-08-18 18:30:36,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 18:30:36,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-18 18:30:36,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:36,845 INFO L225 Difference]: With dead ends: 1292 [2020-08-18 18:30:36,845 INFO L226 Difference]: Without dead ends: 1289 [2020-08-18 18:30:36,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-18 18:30:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-08-18 18:30:37,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1091. [2020-08-18 18:30:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-08-18 18:30:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1300 transitions. [2020-08-18 18:30:37,148 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1300 transitions. Word has length 92 [2020-08-18 18:30:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:37,149 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1300 transitions. [2020-08-18 18:30:37,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:30:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1300 transitions. [2020-08-18 18:30:37,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 18:30:37,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:37,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:37,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:30:37,157 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:37,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:37,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1507801122, now seen corresponding path program 1 times [2020-08-18 18:30:37,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:37,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177609875] [2020-08-18 18:30:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,476 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:37,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:30:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:30:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:30:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:30:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 18:30:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 18:30:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 18:30:37,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177609875] [2020-08-18 18:30:37,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:30:37,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 18:30:37,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738100556] [2020-08-18 18:30:37,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 18:30:37,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:37,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 18:30:37,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 18:30:37,697 INFO L87 Difference]: Start difference. First operand 1091 states and 1300 transitions. Second operand 13 states. [2020-08-18 18:30:38,288 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:38,608 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:38,843 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:39,722 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:41,008 INFO L93 Difference]: Finished difference Result 1954 states and 2438 transitions. [2020-08-18 18:30:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 18:30:41,009 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-08-18 18:30:41,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:41,018 INFO L225 Difference]: With dead ends: 1954 [2020-08-18 18:30:41,018 INFO L226 Difference]: Without dead ends: 1015 [2020-08-18 18:30:41,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-18 18:30:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-18 18:30:41,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 892. [2020-08-18 18:30:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-08-18 18:30:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1050 transitions. [2020-08-18 18:30:41,247 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1050 transitions. Word has length 150 [2020-08-18 18:30:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:41,248 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1050 transitions. [2020-08-18 18:30:41,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 18:30:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1050 transitions. [2020-08-18 18:30:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 18:30:41,252 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:41,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:41,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:30:41,253 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:41,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:41,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1309638405, now seen corresponding path program 1 times [2020-08-18 18:30:41,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:41,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036264031] [2020-08-18 18:30:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,550 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:41,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:30:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:30:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:30:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 18:30:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:30:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:30:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 18:30:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 18:30:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-18 18:30:41,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036264031] [2020-08-18 18:30:41,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:30:41,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 18:30:41,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336821702] [2020-08-18 18:30:41,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 18:30:41,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:41,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 18:30:41,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:30:41,820 INFO L87 Difference]: Start difference. First operand 892 states and 1050 transitions. Second operand 15 states. [2020-08-18 18:30:42,441 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:43,358 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:45,287 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-18 18:30:45,754 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 18:30:46,227 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 18:30:47,128 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 18:30:47,420 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:47,681 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:47,929 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:49,725 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-18 18:30:50,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:50,683 INFO L93 Difference]: Finished difference Result 2848 states and 3670 transitions. [2020-08-18 18:30:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-18 18:30:50,688 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 152 [2020-08-18 18:30:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:50,732 INFO L225 Difference]: With dead ends: 2848 [2020-08-18 18:30:50,733 INFO L226 Difference]: Without dead ends: 2108 [2020-08-18 18:30:50,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=754, Invalid=3028, Unknown=0, NotChecked=0, Total=3782 [2020-08-18 18:30:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2020-08-18 18:30:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1816. [2020-08-18 18:30:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-08-18 18:30:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2157 transitions. [2020-08-18 18:30:51,151 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2157 transitions. Word has length 152 [2020-08-18 18:30:51,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:51,152 INFO L479 AbstractCegarLoop]: Abstraction has 1816 states and 2157 transitions. [2020-08-18 18:30:51,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 18:30:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2157 transitions. [2020-08-18 18:30:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 18:30:51,155 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:51,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:51,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:30:51,156 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:51,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:51,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1237251847, now seen corresponding path program 1 times [2020-08-18 18:30:51,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:51,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841970206] [2020-08-18 18:30:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,457 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:51,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:30:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:30:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:30:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 18:30:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:30:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:30:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 18:30:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 18:30:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-18 18:30:51,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841970206] [2020-08-18 18:30:51,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:30:51,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 18:30:51,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636999907] [2020-08-18 18:30:51,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 18:30:51,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:51,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 18:30:51,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:30:51,743 INFO L87 Difference]: Start difference. First operand 1816 states and 2157 transitions. Second operand 15 states. [2020-08-18 18:30:52,391 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:52,645 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:52,893 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:54,461 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:54,710 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:54,954 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:55,182 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:55,438 INFO L93 Difference]: Finished difference Result 2571 states and 3119 transitions. [2020-08-18 18:30:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 18:30:55,439 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 152 [2020-08-18 18:30:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:55,440 INFO L225 Difference]: With dead ends: 2571 [2020-08-18 18:30:55,440 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 18:30:55,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2020-08-18 18:30:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 18:30:55,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 18:30:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 18:30:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 18:30:55,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2020-08-18 18:30:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:55,448 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 18:30:55,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 18:30:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 18:30:55,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 18:30:55,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 18:30:55,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 18:30:58,900 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 343 DAG size of output: 302