/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:23:42,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:23:42,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:23:42,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:23:42,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:23:42,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:23:42,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:23:42,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:23:42,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:23:42,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:23:42,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:23:42,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:23:42,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:23:42,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:23:42,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:23:42,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:23:42,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:23:42,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:23:42,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:23:42,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:23:42,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:23:42,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:23:42,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:23:42,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:23:42,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:23:42,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:23:42,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:23:42,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:23:42,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:23:42,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:23:42,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:23:42,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:23:42,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:23:42,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:23:42,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:23:42,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:23:42,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:23:42,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:23:42,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:23:42,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:23:42,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:23:42,541 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 [2020-08-19 03:23:42,582 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:23:42,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:23:42,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:23:42,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:23:42,586 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:23:42,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:23:42,587 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:23:42,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:23:42,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:23:42,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:23:42,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:23:42,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:23:42,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:23:42,589 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:23:42,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:23:42,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:23:42,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:23:42,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:23:42,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:23:42,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:23:42,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:23:42,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:23:42,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:23:42,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:23:42,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:23:42,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:23:42,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:23:42,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:23:42,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:23:42,592 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=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:23:42,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:23:42,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:23:42,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:23:42,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:23:42,914 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:23:42,915 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-19 03:23:42,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d3e8b7ab/ba1c8e14014144bb8ddcc8c58c40b3f9/FLAGd3238292e [2020-08-19 03:23:43,553 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:23:43,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-19 03:23:43,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d3e8b7ab/ba1c8e14014144bb8ddcc8c58c40b3f9/FLAGd3238292e [2020-08-19 03:23:43,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d3e8b7ab/ba1c8e14014144bb8ddcc8c58c40b3f9 [2020-08-19 03:23:43,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:23:43,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:23:43,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:23:43,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:23:43,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:23:43,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:23:43" (1/1) ... [2020-08-19 03:23:43,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf744c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:43, skipping insertion in model container [2020-08-19 03:23:43,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:23:43" (1/1) ... [2020-08-19 03:23:43,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:23:43,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:23:44,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:23:44,238 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:23:44,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:23:44,494 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:23:44,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:44 WrapperNode [2020-08-19 03:23:44,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:23:44,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:23:44,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:23:44,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:23:44,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:44" (1/1) ... [2020-08-19 03:23:44,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:44" (1/1) ... [2020-08-19 03:23:44,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:44" (1/1) ... [2020-08-19 03:23:44,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:44" (1/1) ... [2020-08-19 03:23:44,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:44" (1/1) ... [2020-08-19 03:23:44,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:44" (1/1) ... [2020-08-19 03:23:44,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:44" (1/1) ... [2020-08-19 03:23:44,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:23:44,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:23:44,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:23:44,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:23:44,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:44" (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 [2020-08-19 03:23:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:23:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:23:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:23:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:23:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:23:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:23:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:23:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:23:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:23:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:23:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 03:23:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:23:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-19 03:23:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-19 03:23:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-19 03:23:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-19 03:23:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-19 03:23:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-19 03:23:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:23:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-19 03:23:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-19 03:23:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:23:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:23:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:23:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:23:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:23:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:23:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 03:23:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 03:23:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 03:23:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:23:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:23:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:23:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:23:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:23:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:23:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 03:23:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 03:23:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:23:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:23:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:23:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:23:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:23:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:23:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:23:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:23:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:23:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:23:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:23:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:23:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:23:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:23:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:23:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:23:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:23:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:23:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:23:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:23:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:23:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 03:23:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:23:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:23:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:23:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:23:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:23:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:23:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 03:23:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 03:23:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 03:23:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:23:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-19 03:23:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:23:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-19 03:23:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-19 03:23:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 03:23:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-19 03:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-19 03:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-19 03:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-19 03:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-19 03:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:23:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:23:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 03:23:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:23:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:23:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:23:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:23:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:23:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:23:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:23:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:23:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:23:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:23:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:23:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:23:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:23:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:23:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:23:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:23:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:23:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:23:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:23:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:23:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:23:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:23:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:23:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:23:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:23:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:23:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:23:45,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:23:45,763 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:23:45,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:23:45 BoogieIcfgContainer [2020-08-19 03:23:45,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:23:45,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:23:45,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:23:45,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:23:45,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:23:43" (1/3) ... [2020-08-19 03:23:45,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95487df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:23:45, skipping insertion in model container [2020-08-19 03:23:45,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:44" (2/3) ... [2020-08-19 03:23:45,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95487df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:23:45, skipping insertion in model container [2020-08-19 03:23:45,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:23:45" (3/3) ... [2020-08-19 03:23:45,778 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_productSimulator.cil.c [2020-08-19 03:23:45,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:23:45,800 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:23:45,817 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:23:45,843 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:23:45,843 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:23:45,843 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:23:45,844 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:23:45,844 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:23:45,844 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:23:45,844 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:23:45,845 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:23:45,869 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states. [2020-08-19 03:23:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 03:23:45,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:45,884 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:45,884 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:45,891 INFO L82 PathProgramCache]: Analyzing trace with hash 2065144369, now seen corresponding path program 1 times [2020-08-19 03:23:45,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:45,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927915583] [2020-08-19 03:23:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,742 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 03:23:46,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:23:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:23:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:23:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:23:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:23:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 03:23:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 03:23:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:23:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 03:23:46,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927915583] [2020-08-19 03:23:46,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:46,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:23:46,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812692004] [2020-08-19 03:23:46,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:23:46,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:46,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:23:46,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:23:46,921 INFO L87 Difference]: Start difference. First operand 247 states. Second operand 6 states. [2020-08-19 03:23:49,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:49,194 INFO L93 Difference]: Finished difference Result 442 states and 585 transitions. [2020-08-19 03:23:49,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:23:49,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-19 03:23:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:49,215 INFO L225 Difference]: With dead ends: 442 [2020-08-19 03:23:49,215 INFO L226 Difference]: Without dead ends: 256 [2020-08-19 03:23:49,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:23:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-19 03:23:49,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 204. [2020-08-19 03:23:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-19 03:23:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 251 transitions. [2020-08-19 03:23:49,331 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 251 transitions. Word has length 83 [2020-08-19 03:23:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:49,332 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 251 transitions. [2020-08-19 03:23:49,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:23:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 251 transitions. [2020-08-19 03:23:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 03:23:49,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:49,340 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:49,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:23:49,340 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:49,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1458323181, now seen corresponding path program 1 times [2020-08-19 03:23:49,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:49,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150729034] [2020-08-19 03:23:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,760 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 03:23:49,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:23:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:23:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:23:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:23:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:23:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 03:23:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 03:23:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 03:23:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 03:23:49,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150729034] [2020-08-19 03:23:49,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:49,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:23:49,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015278066] [2020-08-19 03:23:49,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:23:49,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:49,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:23:49,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:23:49,917 INFO L87 Difference]: Start difference. First operand 204 states and 251 transitions. Second operand 7 states. [2020-08-19 03:23:50,793 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-19 03:23:52,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:52,591 INFO L93 Difference]: Finished difference Result 375 states and 480 transitions. [2020-08-19 03:23:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:23:52,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-19 03:23:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:52,600 INFO L225 Difference]: With dead ends: 375 [2020-08-19 03:23:52,600 INFO L226 Difference]: Without dead ends: 246 [2020-08-19 03:23:52,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:23:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-19 03:23:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 195. [2020-08-19 03:23:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-19 03:23:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 239 transitions. [2020-08-19 03:23:52,656 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 239 transitions. Word has length 84 [2020-08-19 03:23:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:52,657 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 239 transitions. [2020-08-19 03:23:52,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:23:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 239 transitions. [2020-08-19 03:23:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 03:23:52,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:52,661 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:52,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:23:52,662 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:52,662 INFO L82 PathProgramCache]: Analyzing trace with hash 481269972, now seen corresponding path program 1 times [2020-08-19 03:23:52,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:52,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891493958] [2020-08-19 03:23:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,055 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 03:23:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:23:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:23:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:23:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:23:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:23:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 03:23:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:23:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:23:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 03:23:53,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891493958] [2020-08-19 03:23:53,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:53,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 03:23:53,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142377240] [2020-08-19 03:23:53,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:23:53,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:53,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:23:53,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:23:53,253 INFO L87 Difference]: Start difference. First operand 195 states and 239 transitions. Second operand 13 states. [2020-08-19 03:23:53,974 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 03:23:54,676 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2020-08-19 03:23:55,515 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-08-19 03:23:56,746 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 03:23:57,136 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-19 03:24:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:01,079 INFO L93 Difference]: Finished difference Result 633 states and 818 transitions. [2020-08-19 03:24:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 03:24:01,079 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-08-19 03:24:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:01,085 INFO L225 Difference]: With dead ends: 633 [2020-08-19 03:24:01,085 INFO L226 Difference]: Without dead ends: 483 [2020-08-19 03:24:01,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-08-19 03:24:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-19 03:24:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 386. [2020-08-19 03:24:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-19 03:24:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 486 transitions. [2020-08-19 03:24:01,213 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 486 transitions. Word has length 89 [2020-08-19 03:24:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:01,213 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 486 transitions. [2020-08-19 03:24:01,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:24:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 486 transitions. [2020-08-19 03:24:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 03:24:01,218 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:01,219 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:01,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:24:01,219 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:01,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:01,220 INFO L82 PathProgramCache]: Analyzing trace with hash -678987685, now seen corresponding path program 1 times [2020-08-19 03:24:01,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:01,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153634450] [2020-08-19 03:24:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,562 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 03:24:01,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:24:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:24:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:24:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:24:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:24:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 03:24:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 03:24:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:24:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 03:24:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 03:24:01,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153634450] [2020-08-19 03:24:01,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:01,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:24:01,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093595174] [2020-08-19 03:24:01,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:24:01,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:01,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:24:01,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:24:01,751 INFO L87 Difference]: Start difference. First operand 386 states and 486 transitions. Second operand 11 states. [2020-08-19 03:24:02,361 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 03:24:04,128 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 03:24:04,692 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 03:24:04,972 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 03:24:05,339 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 03:24:08,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:08,394 INFO L93 Difference]: Finished difference Result 1239 states and 1662 transitions. [2020-08-19 03:24:08,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:24:08,394 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-08-19 03:24:08,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:08,402 INFO L225 Difference]: With dead ends: 1239 [2020-08-19 03:24:08,402 INFO L226 Difference]: Without dead ends: 898 [2020-08-19 03:24:08,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812 [2020-08-19 03:24:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-08-19 03:24:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 703. [2020-08-19 03:24:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-19 03:24:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 890 transitions. [2020-08-19 03:24:08,591 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 890 transitions. Word has length 95 [2020-08-19 03:24:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:08,592 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 890 transitions. [2020-08-19 03:24:08,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:24:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 890 transitions. [2020-08-19 03:24:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 03:24:08,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:08,596 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:08,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:24:08,596 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:08,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:08,596 INFO L82 PathProgramCache]: Analyzing trace with hash -319049537, now seen corresponding path program 1 times [2020-08-19 03:24:08,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:08,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918496890] [2020-08-19 03:24:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:08,966 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 03:24:08,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:24:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:24:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:24:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:24:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:24:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 03:24:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 03:24:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:24:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 03:24:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 03:24:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 03:24:09,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918496890] [2020-08-19 03:24:09,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:09,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:24:09,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961814123] [2020-08-19 03:24:09,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:24:09,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:09,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:24:09,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:24:09,150 INFO L87 Difference]: Start difference. First operand 703 states and 890 transitions. Second operand 12 states. [2020-08-19 03:24:09,800 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 03:24:11,658 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 03:24:11,979 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 03:24:12,361 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 03:24:13,611 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 03:24:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:16,298 INFO L93 Difference]: Finished difference Result 1988 states and 2808 transitions. [2020-08-19 03:24:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 03:24:16,299 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-08-19 03:24:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:16,310 INFO L225 Difference]: With dead ends: 1988 [2020-08-19 03:24:16,310 INFO L226 Difference]: Without dead ends: 1330 [2020-08-19 03:24:16,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 03:24:16,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2020-08-19 03:24:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1102. [2020-08-19 03:24:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-19 03:24:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1421 transitions. [2020-08-19 03:24:16,539 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1421 transitions. Word has length 99 [2020-08-19 03:24:16,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:16,540 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1421 transitions. [2020-08-19 03:24:16,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:24:16,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1421 transitions. [2020-08-19 03:24:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 03:24:16,544 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:16,544 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:16,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:24:16,545 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:16,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1144263416, now seen corresponding path program 1 times [2020-08-19 03:24:16,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:16,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700635144] [2020-08-19 03:24:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,917 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 03:24:16,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:24:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:24:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:24:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:24:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:24:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 03:24:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 03:24:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 03:24:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 03:24:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 03:24:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 03:24:17,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700635144] [2020-08-19 03:24:17,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:17,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:24:17,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301597776] [2020-08-19 03:24:17,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:24:17,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:17,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:24:17,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:24:17,165 INFO L87 Difference]: Start difference. First operand 1102 states and 1421 transitions. Second operand 12 states. [2020-08-19 03:24:19,073 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-19 03:24:19,398 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-19 03:24:19,713 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-19 03:24:20,083 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-19 03:24:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:22,147 INFO L93 Difference]: Finished difference Result 2481 states and 3557 transitions. [2020-08-19 03:24:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 03:24:22,147 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-08-19 03:24:22,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:22,158 INFO L225 Difference]: With dead ends: 2481 [2020-08-19 03:24:22,158 INFO L226 Difference]: Without dead ends: 1424 [2020-08-19 03:24:22,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:24:22,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-08-19 03:24:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1128. [2020-08-19 03:24:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-08-19 03:24:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1449 transitions. [2020-08-19 03:24:22,358 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1449 transitions. Word has length 132 [2020-08-19 03:24:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:22,358 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 1449 transitions. [2020-08-19 03:24:22,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:24:22,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1449 transitions. [2020-08-19 03:24:22,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 03:24:22,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:22,362 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:22,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:24:22,363 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:22,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1305336714, now seen corresponding path program 1 times [2020-08-19 03:24:22,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:22,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373653922] [2020-08-19 03:24:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,751 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 03:24:22,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:24:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:24:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:24:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:24:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:24:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 03:24:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 03:24:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 03:24:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:22,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:23,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:23,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:23,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:23,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:23,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 03:24:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 03:24:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 03:24:23,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373653922] [2020-08-19 03:24:23,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:23,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 03:24:23,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688547378] [2020-08-19 03:24:23,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 03:24:23,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:23,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 03:24:23,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:24:23,160 INFO L87 Difference]: Start difference. First operand 1128 states and 1449 transitions. Second operand 15 states. [2020-08-19 03:24:24,453 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 03:24:24,996 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 03:24:26,392 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 03:24:26,766 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 03:24:27,129 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 03:24:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:29,342 INFO L93 Difference]: Finished difference Result 2527 states and 3605 transitions. [2020-08-19 03:24:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 03:24:29,343 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 132 [2020-08-19 03:24:29,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:29,353 INFO L225 Difference]: With dead ends: 2527 [2020-08-19 03:24:29,353 INFO L226 Difference]: Without dead ends: 1444 [2020-08-19 03:24:29,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2020-08-19 03:24:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-08-19 03:24:29,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1144. [2020-08-19 03:24:29,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2020-08-19 03:24:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1465 transitions. [2020-08-19 03:24:29,756 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1465 transitions. Word has length 132 [2020-08-19 03:24:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:29,757 INFO L479 AbstractCegarLoop]: Abstraction has 1144 states and 1465 transitions. [2020-08-19 03:24:29,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 03:24:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1465 transitions. [2020-08-19 03:24:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 03:24:29,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:29,764 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:29,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:24:29,764 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:29,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:29,765 INFO L82 PathProgramCache]: Analyzing trace with hash 856640075, now seen corresponding path program 1 times [2020-08-19 03:24:29,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:29,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580360572] [2020-08-19 03:24:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,133 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 03:24:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:24:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:24:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:24:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:24:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:24:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 03:24:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 03:24:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 03:24:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 03:24:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 03:24:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 03:24:30,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580360572] [2020-08-19 03:24:30,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:30,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:24:30,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651914048] [2020-08-19 03:24:30,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:24:30,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:30,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:24:30,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:24:30,497 INFO L87 Difference]: Start difference. First operand 1144 states and 1465 transitions. Second operand 10 states. [2020-08-19 03:24:31,232 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 03:24:32,197 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 03:24:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:37,069 INFO L93 Difference]: Finished difference Result 3668 states and 5255 transitions. [2020-08-19 03:24:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 03:24:37,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-19 03:24:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:37,087 INFO L225 Difference]: With dead ends: 3668 [2020-08-19 03:24:37,087 INFO L226 Difference]: Without dead ends: 2569 [2020-08-19 03:24:37,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2020-08-19 03:24:37,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2020-08-19 03:24:37,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2160. [2020-08-19 03:24:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2020-08-19 03:24:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2823 transitions. [2020-08-19 03:24:37,690 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2823 transitions. Word has length 132 [2020-08-19 03:24:37,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:37,691 INFO L479 AbstractCegarLoop]: Abstraction has 2160 states and 2823 transitions. [2020-08-19 03:24:37,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:24:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2823 transitions. [2020-08-19 03:24:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 03:24:37,695 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:37,696 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:37,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:24:37,696 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:37,696 INFO L82 PathProgramCache]: Analyzing trace with hash 2033559269, now seen corresponding path program 1 times [2020-08-19 03:24:37,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:37,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816809815] [2020-08-19 03:24:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,048 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 03:24:38,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:24:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:24:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:24:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 03:24:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:24:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 03:24:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 03:24:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 03:24:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:24:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-19 03:24:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 03:24:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 03:24:38,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816809815] [2020-08-19 03:24:38,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:38,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:24:38,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752124538] [2020-08-19 03:24:38,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:24:38,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:38,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:24:38,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:24:38,241 INFO L87 Difference]: Start difference. First operand 2160 states and 2823 transitions. Second operand 10 states. [2020-08-19 03:24:38,953 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 213