/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:43:01,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:43:01,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:43:01,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:43:01,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:43:01,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:43:01,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:43:01,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:43:01,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:43:01,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:43:01,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:43:01,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:43:01,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:43:01,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:43:01,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:43:01,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:43:01,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:43:01,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:43:01,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:43:01,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:43:01,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:43:01,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:43:01,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:43:01,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:43:01,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:43:01,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:43:01,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:43:01,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:43:01,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:43:01,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:43:01,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:43:01,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:43:01,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:43:01,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:43:01,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:43:01,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:43:01,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:43:01,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:43:01,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:43:01,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:43:01,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:43:01,649 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 [2020-08-22 03:43:01,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:43:01,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:43:01,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:43:01,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:43:01,685 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:43:01,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:43:01,687 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:43:01,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:43:01,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:43:01,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:43:01,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:43:01,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:43:01,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:43:01,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:43:01,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:43:01,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:43:01,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:43:01,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:43:01,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:43:01,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:43:01,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:43:01,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:43:01,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:43:01,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:43:01,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:43:01,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:43:01,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:43:01,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:43:01,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:43:01,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:43:02,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:43:02,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:43:02,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:43:02,049 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:43:02,049 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:43:02,050 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-22 03:43:02,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d5b88b74/6f43747673c44b539a975a3867929387/FLAGe3d5f9307 [2020-08-22 03:43:02,635 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:43:02,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-22 03:43:02,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d5b88b74/6f43747673c44b539a975a3867929387/FLAGe3d5f9307 [2020-08-22 03:43:02,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d5b88b74/6f43747673c44b539a975a3867929387 [2020-08-22 03:43:02,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:43:02,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:43:02,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:43:02,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:43:02,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:43:02,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:43:02" (1/1) ... [2020-08-22 03:43:02,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b36a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:02, skipping insertion in model container [2020-08-22 03:43:02,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:43:02" (1/1) ... [2020-08-22 03:43:02,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:43:03,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:43:03,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:43:03,587 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:43:03,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:43:03,694 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:43:03,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:03 WrapperNode [2020-08-22 03:43:03,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:43:03,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:43:03,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:43:03,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:43:03,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:03" (1/1) ... [2020-08-22 03:43:03,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:03" (1/1) ... [2020-08-22 03:43:03,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:03" (1/1) ... [2020-08-22 03:43:03,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:03" (1/1) ... [2020-08-22 03:43:03,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:03" (1/1) ... [2020-08-22 03:43:03,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:03" (1/1) ... [2020-08-22 03:43:03,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:03" (1/1) ... [2020-08-22 03:43:03,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:43:03,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:43:03,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:43:03,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:43:03,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:43:03,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:43:03,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:43:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:43:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:43:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:43:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:43:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:43:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:43:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:43:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:43:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:43:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:43:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:43:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:43:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:43:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:43:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 03:43:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:43:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:43:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:43:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:43:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:43:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:43:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:43:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 03:43:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:43:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:43:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:43:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:43:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:43:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:43:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:43:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:43:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:43:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:43:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:43:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:43:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:43:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 03:43:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:43:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:43:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:43:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:43:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:43:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:43:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:43:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:43:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:43:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:43:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:43:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:43:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:43:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:43:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:43:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:43:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:43:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:43:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:43:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:43:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:43:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:43:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:43:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:43:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:43:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:43:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 03:43:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:43:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:43:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:43:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:43:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:43:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:43:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:43:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:43:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:43:03,875 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:43:03,875 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:43:03,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 03:43:03,875 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:43:03,875 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:43:03,875 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:43:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 03:43:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:43:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:43:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:43:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:43:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:43:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:43:03,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:43:03,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:43:03,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:43:03,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:43:04,992 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:43:04,992 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:43:05,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:43:05 BoogieIcfgContainer [2020-08-22 03:43:05,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:43:05,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:43:05,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:43:05,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:43:05,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:43:02" (1/3) ... [2020-08-22 03:43:05,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16780e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:43:05, skipping insertion in model container [2020-08-22 03:43:05,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:03" (2/3) ... [2020-08-22 03:43:05,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16780e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:43:05, skipping insertion in model container [2020-08-22 03:43:05,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:43:05" (3/3) ... [2020-08-22 03:43:05,013 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-08-22 03:43:05,023 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:43:05,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:43:05,045 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:43:05,066 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:43:05,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:43:05,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:43:05,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:43:05,067 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:43:05,067 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:43:05,067 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:43:05,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:43:05,089 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-22 03:43:05,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 03:43:05,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:05,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:05,101 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:05,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1123456625, now seen corresponding path program 1 times [2020-08-22 03:43:05,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:05,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355786138] [2020-08-22 03:43:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:05,738 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:05,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:05,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:05,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:05,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:05,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:05,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:43:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:05,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:43:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:05,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355786138] [2020-08-22 03:43:05,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:05,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:43:05,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614656964] [2020-08-22 03:43:05,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:43:05,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:05,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:43:05,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:43:05,904 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-22 03:43:07,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:07,132 INFO L93 Difference]: Finished difference Result 307 states and 401 transitions. [2020-08-22 03:43:07,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:43:07,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 03:43:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:07,151 INFO L225 Difference]: With dead ends: 307 [2020-08-22 03:43:07,151 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 03:43:07,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:43:07,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 03:43:07,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2020-08-22 03:43:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-22 03:43:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-22 03:43:07,253 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 46 [2020-08-22 03:43:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:07,254 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-22 03:43:07,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:43:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-22 03:43:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 03:43:07,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:07,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:07,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:43:07,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:07,259 INFO L82 PathProgramCache]: Analyzing trace with hash -790150173, now seen corresponding path program 1 times [2020-08-22 03:43:07,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:07,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706159003] [2020-08-22 03:43:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,621 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:07,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:43:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:43:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:07,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706159003] [2020-08-22 03:43:07,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:07,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:43:07,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75404324] [2020-08-22 03:43:07,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:43:07,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:07,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:43:07,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:43:07,669 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 4 states. [2020-08-22 03:43:08,088 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:08,906 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-08-22 03:43:08,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:43:08,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 03:43:08,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:08,914 INFO L225 Difference]: With dead ends: 234 [2020-08-22 03:43:08,914 INFO L226 Difference]: Without dead ends: 150 [2020-08-22 03:43:08,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:43:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-08-22 03:43:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2020-08-22 03:43:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 03:43:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-22 03:43:08,951 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 47 [2020-08-22 03:43:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:08,952 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-22 03:43:08,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:43:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-22 03:43:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 03:43:08,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:08,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:08,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:43:08,955 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:08,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:08,955 INFO L82 PathProgramCache]: Analyzing trace with hash 271076632, now seen corresponding path program 1 times [2020-08-22 03:43:08,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:08,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196558622] [2020-08-22 03:43:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:09,281 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:09,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:09,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:09,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:09,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:09,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:09,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:43:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:09,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:43:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:09,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196558622] [2020-08-22 03:43:09,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:09,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:43:09,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447440921] [2020-08-22 03:43:09,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:43:09,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:09,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:43:09,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:43:09,403 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 8 states. [2020-08-22 03:43:09,777 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:10,126 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:10,365 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:10,600 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:11,354 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:13,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:13,075 INFO L93 Difference]: Finished difference Result 421 states and 521 transitions. [2020-08-22 03:43:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:43:13,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 03:43:13,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:13,081 INFO L225 Difference]: With dead ends: 421 [2020-08-22 03:43:13,081 INFO L226 Difference]: Without dead ends: 322 [2020-08-22 03:43:13,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:43:13,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-22 03:43:13,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 264. [2020-08-22 03:43:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-22 03:43:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 318 transitions. [2020-08-22 03:43:13,154 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 318 transitions. Word has length 51 [2020-08-22 03:43:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:13,154 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 318 transitions. [2020-08-22 03:43:13,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:43:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 318 transitions. [2020-08-22 03:43:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 03:43:13,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:13,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:13,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:43:13,158 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:13,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:13,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1813365187, now seen corresponding path program 1 times [2020-08-22 03:43:13,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:13,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137500777] [2020-08-22 03:43:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,464 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:43:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:43:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 03:43:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:13,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137500777] [2020-08-22 03:43:13,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:13,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 03:43:13,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214246029] [2020-08-22 03:43:13,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:43:13,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:13,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:43:13,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:13,616 INFO L87 Difference]: Start difference. First operand 264 states and 318 transitions. Second operand 12 states. [2020-08-22 03:43:14,048 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:14,367 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:14,628 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:14,878 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:15,407 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:16,184 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:16,546 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:16,860 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:17,144 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:17,427 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:17,840 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:18,157 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:18,408 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:20,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:20,050 INFO L93 Difference]: Finished difference Result 1065 states and 1468 transitions. [2020-08-22 03:43:20,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 03:43:20,051 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 03:43:20,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:20,059 INFO L225 Difference]: With dead ends: 1065 [2020-08-22 03:43:20,060 INFO L226 Difference]: Without dead ends: 825 [2020-08-22 03:43:20,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 03:43:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-08-22 03:43:20,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 732. [2020-08-22 03:43:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-22 03:43:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 932 transitions. [2020-08-22 03:43:20,275 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 932 transitions. Word has length 57 [2020-08-22 03:43:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:20,277 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 932 transitions. [2020-08-22 03:43:20,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:43:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 932 transitions. [2020-08-22 03:43:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 03:43:20,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:20,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:20,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:43:20,292 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:20,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:20,293 INFO L82 PathProgramCache]: Analyzing trace with hash 2128676035, now seen corresponding path program 1 times [2020-08-22 03:43:20,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:20,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567014786] [2020-08-22 03:43:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,605 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:20,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:43:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:43:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 03:43:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 03:43:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:20,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567014786] [2020-08-22 03:43:20,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:20,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:43:20,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082707615] [2020-08-22 03:43:20,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:43:20,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:20,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:43:20,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:43:20,714 INFO L87 Difference]: Start difference. First operand 732 states and 932 transitions. Second operand 6 states. [2020-08-22 03:43:21,016 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:22,768 INFO L93 Difference]: Finished difference Result 1759 states and 2407 transitions. [2020-08-22 03:43:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 03:43:22,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 03:43:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:22,780 INFO L225 Difference]: With dead ends: 1759 [2020-08-22 03:43:22,781 INFO L226 Difference]: Without dead ends: 1051 [2020-08-22 03:43:22,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:43:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2020-08-22 03:43:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 964. [2020-08-22 03:43:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-08-22 03:43:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1220 transitions. [2020-08-22 03:43:23,016 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1220 transitions. Word has length 61 [2020-08-22 03:43:23,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:23,017 INFO L479 AbstractCegarLoop]: Abstraction has 964 states and 1220 transitions. [2020-08-22 03:43:23,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:43:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1220 transitions. [2020-08-22 03:43:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 03:43:23,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:23,022 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:23,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:43:23,022 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:23,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1754610703, now seen corresponding path program 1 times [2020-08-22 03:43:23,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:23,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053230882] [2020-08-22 03:43:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,397 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:43:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 03:43:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:43:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 03:43:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 03:43:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 03:43:23,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053230882] [2020-08-22 03:43:23,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:23,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 03:43:23,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452066430] [2020-08-22 03:43:23,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:43:23,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:23,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:43:23,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:43:23,560 INFO L87 Difference]: Start difference. First operand 964 states and 1220 transitions. Second operand 10 states. [2020-08-22 03:43:24,238 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 03:43:24,806 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:26,633 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:28,716 INFO L93 Difference]: Finished difference Result 1865 states and 2457 transitions. [2020-08-22 03:43:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 03:43:28,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 03:43:28,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:28,724 INFO L225 Difference]: With dead ends: 1865 [2020-08-22 03:43:28,725 INFO L226 Difference]: Without dead ends: 1168 [2020-08-22 03:43:28,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 03:43:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-22 03:43:28,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1071. [2020-08-22 03:43:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-22 03:43:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1331 transitions. [2020-08-22 03:43:28,950 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1331 transitions. Word has length 88 [2020-08-22 03:43:28,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:28,953 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1331 transitions. [2020-08-22 03:43:28,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:43:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1331 transitions. [2020-08-22 03:43:28,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 03:43:28,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:28,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:28,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:43:28,958 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:28,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:28,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1977854615, now seen corresponding path program 1 times [2020-08-22 03:43:28,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:28,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874512904] [2020-08-22 03:43:28,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,214 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:29,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:43:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:43:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 03:43:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 03:43:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 03:43:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:43:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 03:43:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 03:43:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 03:43:29,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874512904] [2020-08-22 03:43:29,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:29,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 03:43:29,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597447026] [2020-08-22 03:43:29,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:43:29,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:29,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:43:29,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:43:29,468 INFO L87 Difference]: Start difference. First operand 1071 states and 1331 transitions. Second operand 10 states. [2020-08-22 03:43:30,823 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:31,107 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:43:31,369 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:31,621 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:32,536 INFO L93 Difference]: Finished difference Result 2259 states and 2935 transitions. [2020-08-22 03:43:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:43:32,537 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-22 03:43:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:32,545 INFO L225 Difference]: With dead ends: 2259 [2020-08-22 03:43:32,545 INFO L226 Difference]: Without dead ends: 1212 [2020-08-22 03:43:32,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:43:32,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-08-22 03:43:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1101. [2020-08-22 03:43:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2020-08-22 03:43:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1365 transitions. [2020-08-22 03:43:32,772 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1365 transitions. Word has length 130 [2020-08-22 03:43:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:32,773 INFO L479 AbstractCegarLoop]: Abstraction has 1101 states and 1365 transitions. [2020-08-22 03:43:32,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:43:32,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1365 transitions. [2020-08-22 03:43:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-22 03:43:32,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:32,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:32,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:43:32,778 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:32,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:32,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1002064467, now seen corresponding path program 1 times [2020-08-22 03:43:32,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:32,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999262115] [2020-08-22 03:43:32,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,115 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:33,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:43:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:43:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 03:43:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 03:43:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:43:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 03:43:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 03:43:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 03:43:33,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999262115] [2020-08-22 03:43:33,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:33,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 03:43:33,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803666140] [2020-08-22 03:43:33,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:43:33,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:33,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:43:33,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:33,415 INFO L87 Difference]: Start difference. First operand 1101 states and 1365 transitions. Second operand 12 states. [2020-08-22 03:43:34,149 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:34,391 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:34,680 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:35,296 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:35,554 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:35,780 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:36,887 INFO L93 Difference]: Finished difference Result 2069 states and 2643 transitions. [2020-08-22 03:43:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:43:36,888 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-22 03:43:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:36,894 INFO L225 Difference]: With dead ends: 2069 [2020-08-22 03:43:36,895 INFO L226 Difference]: Without dead ends: 992 [2020-08-22 03:43:36,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:43:36,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-08-22 03:43:37,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 936. [2020-08-22 03:43:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-08-22 03:43:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1136 transitions. [2020-08-22 03:43:37,114 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1136 transitions. Word has length 126 [2020-08-22 03:43:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:37,114 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1136 transitions. [2020-08-22 03:43:37,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:43:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1136 transitions. [2020-08-22 03:43:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 03:43:37,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:37,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:37,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:43:37,119 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:37,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:37,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1767310158, now seen corresponding path program 1 times [2020-08-22 03:43:37,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:37,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783791581] [2020-08-22 03:43:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,444 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:43:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:43:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 03:43:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 03:43:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:43:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 03:43:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 03:43:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 03:43:37,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783791581] [2020-08-22 03:43:37,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:37,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:43:37,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419457127] [2020-08-22 03:43:37,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:43:37,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:37,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:43:37,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:43:37,665 INFO L87 Difference]: Start difference. First operand 936 states and 1136 transitions. Second operand 13 states. [2020-08-22 03:43:38,559 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:39,214 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:41,228 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:41,481 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:41,725 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:41,954 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:42,256 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:42,491 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:42,727 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:42,964 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:43,224 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:43,459 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:44,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:44,179 INFO L93 Difference]: Finished difference Result 2701 states and 3404 transitions. [2020-08-22 03:43:44,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 03:43:44,180 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-22 03:43:44,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:44,191 INFO L225 Difference]: With dead ends: 2701 [2020-08-22 03:43:44,191 INFO L226 Difference]: Without dead ends: 1789 [2020-08-22 03:43:44,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 03:43:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-08-22 03:43:44,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1687. [2020-08-22 03:43:44,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-22 03:43:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2019 transitions. [2020-08-22 03:43:44,560 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2019 transitions. Word has length 130 [2020-08-22 03:43:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:44,562 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2019 transitions. [2020-08-22 03:43:44,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:43:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2019 transitions. [2020-08-22 03:43:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 03:43:44,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:44,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:44,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:43:44,569 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:44,569 INFO L82 PathProgramCache]: Analyzing trace with hash 941448042, now seen corresponding path program 1 times [2020-08-22 03:43:44,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:44,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592656338] [2020-08-22 03:43:44,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,844 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:44,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 03:43:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:43:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:43:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 03:43:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 03:43:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:43:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 03:43:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:44,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 03:43:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 03:43:45,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592656338] [2020-08-22 03:43:45,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:45,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 03:43:45,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834850007] [2020-08-22 03:43:45,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 03:43:45,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:45,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 03:43:45,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:43:45,012 INFO L87 Difference]: Start difference. First operand 1687 states and 2019 transitions. Second operand 11 states. [2020-08-22 03:43:45,470 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:47,523 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:47,751 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:48,014 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:48,264 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:48,505 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:49,137 INFO L93 Difference]: Finished difference Result 1997 states and 2554 transitions. [2020-08-22 03:43:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 03:43:49,138 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-22 03:43:49,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:49,151 INFO L225 Difference]: With dead ends: 1997 [2020-08-22 03:43:49,151 INFO L226 Difference]: Without dead ends: 1994 [2020-08-22 03:43:49,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-22 03:43:49,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2020-08-22 03:43:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1687. [2020-08-22 03:43:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-22 03:43:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2009 transitions. [2020-08-22 03:43:49,588 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2009 transitions. Word has length 134 [2020-08-22 03:43:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:49,588 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2009 transitions. [2020-08-22 03:43:49,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 03:43:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2009 transitions. [2020-08-22 03:43:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 03:43:49,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:49,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:49,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:43:49,595 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:49,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:49,596 INFO L82 PathProgramCache]: Analyzing trace with hash 108116472, now seen corresponding path program 1 times [2020-08-22 03:43:49,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:49,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311762088] [2020-08-22 03:43:49,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:49,894 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:49,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:49,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:49,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:49,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:43:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:43:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 03:43:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 03:43:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:43:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 03:43:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 03:43:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 03:43:50,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311762088] [2020-08-22 03:43:50,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:50,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 03:43:50,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245417811] [2020-08-22 03:43:50,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:43:50,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:50,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:43:50,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:50,091 INFO L87 Difference]: Start difference. First operand 1687 states and 2009 transitions. Second operand 12 states. [2020-08-22 03:43:50,631 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:51,454 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:51,719 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:51,971 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:52,263 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:52,512 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:52,844 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:53,577 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:53,861 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:54,123 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:56,362 INFO L93 Difference]: Finished difference Result 4159 states and 5274 transitions. [2020-08-22 03:43:56,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 03:43:56,363 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-22 03:43:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:56,380 INFO L225 Difference]: With dead ends: 4159 [2020-08-22 03:43:56,381 INFO L226 Difference]: Without dead ends: 2806 [2020-08-22 03:43:56,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-22 03:43:56,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-08-22 03:43:56,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2479. [2020-08-22 03:43:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2020-08-22 03:43:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3004 transitions. [2020-08-22 03:43:56,823 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3004 transitions. Word has length 134 [2020-08-22 03:43:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:56,826 INFO L479 AbstractCegarLoop]: Abstraction has 2479 states and 3004 transitions. [2020-08-22 03:43:56,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:43:56,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3004 transitions. [2020-08-22 03:43:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 03:43:56,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:56,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:56,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 03:43:56,837 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:56,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1415393837, now seen corresponding path program 2 times [2020-08-22 03:43:56,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:56,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813392927] [2020-08-22 03:43:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,394 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:57,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:43:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:43:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 03:43:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:43:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:43:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 03:43:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 03:43:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 03:43:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:43:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 03:43:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 03:43:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-22 03:43:57,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813392927] [2020-08-22 03:43:57,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:57,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 03:43:57,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843293031] [2020-08-22 03:43:57,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 03:43:57,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:57,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 03:43:57,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:43:57,768 INFO L87 Difference]: Start difference. First operand 2479 states and 3004 transitions. Second operand 14 states. [2020-08-22 03:43:58,573 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:59,153 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:59,647 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:59,921 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:00,204 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:00,468 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:00,776 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190