/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:55:40,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:55:40,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:55:40,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:55:40,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:55:40,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:55:40,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:55:40,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:55:40,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:55:40,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:55:40,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:55:40,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:55:40,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:55:40,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:55:40,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:55:40,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:55:40,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:55:40,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:55:40,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:55:40,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:55:40,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:55:40,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:55:40,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:55:40,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:55:40,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:55:40,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:55:40,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:55:40,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:55:40,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:55:40,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:55:40,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:55:40,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:55:40,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:55:40,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:55:40,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:55:40,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:55:40,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:55:40,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:55:40,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:55:40,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:55:40,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:55:40,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:55:40,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:55:40,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:55:40,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:55:40,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:55:40,724 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:55:40,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:55:40,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:55:40,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:55:40,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:55:40,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:55:40,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:55:40,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:55:40,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:55:40,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:55:40,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:55:40,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:55:40,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:55:40,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:55:40,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:55:40,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:55:40,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:55:40,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:55:40,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:55:40,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:55:40,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:55:40,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:55:40,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:55:40,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:55:40,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:55:40,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:55:41,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:55:41,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:55:41,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:55:41,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:55:41,072 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:55:41,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-19 05:55:41,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/183bf3dc2/f60a2962567a4ec4bbb1641306d83059/FLAG050152b39 [2020-08-19 05:55:41,658 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:55:41,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-19 05:55:41,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/183bf3dc2/f60a2962567a4ec4bbb1641306d83059/FLAG050152b39 [2020-08-19 05:55:41,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/183bf3dc2/f60a2962567a4ec4bbb1641306d83059 [2020-08-19 05:55:41,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:55:41,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:55:41,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:55:41,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:55:41,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:55:41,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:55:41" (1/1) ... [2020-08-19 05:55:41,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21046f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:41, skipping insertion in model container [2020-08-19 05:55:41,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:55:41" (1/1) ... [2020-08-19 05:55:41,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:55:42,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:55:42,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:55:42,462 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:55:42,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:55:42,595 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:55:42,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:42 WrapperNode [2020-08-19 05:55:42,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:55:42,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:55:42,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:55:42,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:55:42,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:42" (1/1) ... [2020-08-19 05:55:42,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:42" (1/1) ... [2020-08-19 05:55:42,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:42" (1/1) ... [2020-08-19 05:55:42,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:42" (1/1) ... [2020-08-19 05:55:42,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:42" (1/1) ... [2020-08-19 05:55:42,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:42" (1/1) ... [2020-08-19 05:55:42,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:42" (1/1) ... [2020-08-19 05:55:42,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:55:42,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:55:42,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:55:42,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:55:42,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:55:42,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:55:42,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:55:42,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:55:42,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:55:42,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:55:42,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:55:42,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:55:42,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:55:42,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:55:42,805 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:55:42,805 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:55:42,805 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:55:42,805 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:55:42,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:55:42,806 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:55:42,807 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:55:42,807 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:55:42,807 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:55:42,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:55:42,807 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:55:42,807 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:55:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:55:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:55:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:55:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:55:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:55:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:55:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:55:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:55:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:55:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:55:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 05:55:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:55:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:55:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:55:42,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:55:42,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:55:42,811 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:55:42,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:55:42,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:55:42,812 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 05:55:42,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 05:55:42,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 05:55:42,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 05:55:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:55:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:55:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:55:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:55:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:55:42,814 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:55:42,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:55:42,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:55:42,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:55:42,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:55:42,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:55:42,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:55:42,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:55:42,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:55:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:55:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:55:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:55:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:55:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:55:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:55:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:55:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:55:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:55:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:55:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:55:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:55:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:55:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 05:55:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:55:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:55:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:55:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:55:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:55:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:55:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:55:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:55:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 05:55:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:55:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:55:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:55:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:55:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:55:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:55:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:55:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:55:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:55:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 05:55:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 05:55:42,824 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:55:42,824 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:55:42,824 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:55:42,824 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:55:42,824 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:55:42,824 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 05:55:42,824 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:55:42,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:55:42,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:55:42,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:55:44,108 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:55:44,108 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:55:44,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:55:44 BoogieIcfgContainer [2020-08-19 05:55:44,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:55:44,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:55:44,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:55:44,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:55:44,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:55:41" (1/3) ... [2020-08-19 05:55:44,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767dffec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:55:44, skipping insertion in model container [2020-08-19 05:55:44,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:42" (2/3) ... [2020-08-19 05:55:44,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767dffec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:55:44, skipping insertion in model container [2020-08-19 05:55:44,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:55:44" (3/3) ... [2020-08-19 05:55:44,126 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2020-08-19 05:55:44,136 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:55:44,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:55:44,158 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:55:44,183 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:55:44,184 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:55:44,184 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:55:44,184 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:55:44,184 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:55:44,185 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:55:44,185 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:55:44,185 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:55:44,208 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2020-08-19 05:55:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 05:55:44,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:55:44,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:55:44,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:55:44,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:55:44,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1039510468, now seen corresponding path program 1 times [2020-08-19 05:55:44,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:55:44,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955306614] [2020-08-19 05:55:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:55:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:44,913 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:55:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:44,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:55:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:44,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:55:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:55:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:45,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:55:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:45,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:55:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:45,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:55:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:45,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:45,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:55:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:55:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:55:45,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955306614] [2020-08-19 05:55:45,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:55:45,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:55:45,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7115939] [2020-08-19 05:55:45,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:55:45,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:55:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:55:45,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:55:45,076 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2020-08-19 05:55:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:55:46,365 INFO L93 Difference]: Finished difference Result 356 states and 457 transitions. [2020-08-19 05:55:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:55:46,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 05:55:46,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:55:46,388 INFO L225 Difference]: With dead ends: 356 [2020-08-19 05:55:46,388 INFO L226 Difference]: Without dead ends: 195 [2020-08-19 05:55:46,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:55:46,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-19 05:55:46,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 162. [2020-08-19 05:55:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-19 05:55:46,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2020-08-19 05:55:46,513 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 59 [2020-08-19 05:55:46,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:55:46,514 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2020-08-19 05:55:46,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:55:46,515 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2020-08-19 05:55:46,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 05:55:46,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:55:46,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:55:46,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:55:46,519 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:55:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:55:46,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1700142027, now seen corresponding path program 1 times [2020-08-19 05:55:46,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:55:46,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795658124] [2020-08-19 05:55:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:55:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,905 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:55:46,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:55:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:55:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:55:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:55:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:55:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:55:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:55:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 05:55:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:55:46,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795658124] [2020-08-19 05:55:46,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:55:46,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:55:46,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861022946] [2020-08-19 05:55:46,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:55:46,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:55:46,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:55:46,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:55:46,970 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand 5 states. [2020-08-19 05:55:47,427 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:55:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:55:48,521 INFO L93 Difference]: Finished difference Result 295 states and 361 transitions. [2020-08-19 05:55:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:55:48,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 05:55:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:55:48,526 INFO L225 Difference]: With dead ends: 295 [2020-08-19 05:55:48,526 INFO L226 Difference]: Without dead ends: 185 [2020-08-19 05:55:48,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:55:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-19 05:55:48,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-08-19 05:55:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-19 05:55:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2020-08-19 05:55:48,571 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 60 [2020-08-19 05:55:48,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:55:48,572 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2020-08-19 05:55:48,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:55:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2020-08-19 05:55:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 05:55:48,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:55:48,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:55:48,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:55:48,575 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:55:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:55:48,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1740397712, now seen corresponding path program 1 times [2020-08-19 05:55:48,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:55:48,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066658407] [2020-08-19 05:55:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:55:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:48,990 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:55:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:49,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:55:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:49,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:55:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:55:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:55:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:49,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:55:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:49,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:55:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:49,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:49,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 05:55:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:49,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 05:55:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:55:49,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066658407] [2020-08-19 05:55:49,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:55:49,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:55:49,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348643077] [2020-08-19 05:55:49,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:55:49,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:55:49,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:55:49,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:55:49,091 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 9 states. [2020-08-19 05:55:49,430 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:55:49,802 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:50,061 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:50,307 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:51,246 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:55:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:55:53,389 INFO L93 Difference]: Finished difference Result 508 states and 630 transitions. [2020-08-19 05:55:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:55:53,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-19 05:55:53,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:55:53,396 INFO L225 Difference]: With dead ends: 508 [2020-08-19 05:55:53,396 INFO L226 Difference]: Without dead ends: 383 [2020-08-19 05:55:53,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:55:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-19 05:55:53,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 326. [2020-08-19 05:55:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-19 05:55:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2020-08-19 05:55:53,484 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 64 [2020-08-19 05:55:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:55:53,485 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2020-08-19 05:55:53,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:55:53,485 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2020-08-19 05:55:53,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 05:55:53,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:55:53,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:55:53,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:55:53,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:55:53,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:55:53,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1889366184, now seen corresponding path program 1 times [2020-08-19 05:55:53,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:55:53,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265164238] [2020-08-19 05:55:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:55:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,825 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:55:53,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:55:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:55:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:55:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:55:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:55:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:55:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:55:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 05:55:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:55:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:55:53,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265164238] [2020-08-19 05:55:53,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:55:53,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:55:53,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302204414] [2020-08-19 05:55:53,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:55:53,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:55:53,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:55:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:55:53,951 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand 9 states. [2020-08-19 05:55:54,380 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:55:55,075 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:55,977 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:55:56,278 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:55:56,593 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:56,839 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:55:57,699 INFO L93 Difference]: Finished difference Result 827 states and 1076 transitions. [2020-08-19 05:55:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:55:57,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 05:55:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:55:57,707 INFO L225 Difference]: With dead ends: 827 [2020-08-19 05:55:57,707 INFO L226 Difference]: Without dead ends: 529 [2020-08-19 05:55:57,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:55:57,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-19 05:55:57,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 465. [2020-08-19 05:55:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-08-19 05:55:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 561 transitions. [2020-08-19 05:55:57,835 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 561 transitions. Word has length 70 [2020-08-19 05:55:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:55:57,835 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 561 transitions. [2020-08-19 05:55:57,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:55:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 561 transitions. [2020-08-19 05:55:57,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 05:55:57,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:55:57,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:55:57,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:55:57,839 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:55:57,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:55:57,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1315837753, now seen corresponding path program 1 times [2020-08-19 05:55:57,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:55:57,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296782590] [2020-08-19 05:55:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:55:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,130 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:55:58,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:55:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:55:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:55:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:55:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:55:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:55:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:55:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:55:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:55:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:55:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:55:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:55:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 05:55:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:55:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:55:58,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296782590] [2020-08-19 05:55:58,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:55:58,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:55:58,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142740074] [2020-08-19 05:55:58,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:55:58,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:55:58,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:55:58,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:55:58,280 INFO L87 Difference]: Start difference. First operand 465 states and 561 transitions. Second operand 9 states. [2020-08-19 05:55:59,378 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:59,641 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:55:59,909 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:00,147 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:01,058 INFO L93 Difference]: Finished difference Result 988 states and 1255 transitions. [2020-08-19 05:56:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:56:01,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-19 05:56:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:01,065 INFO L225 Difference]: With dead ends: 988 [2020-08-19 05:56:01,065 INFO L226 Difference]: Without dead ends: 551 [2020-08-19 05:56:01,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:56:01,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-08-19 05:56:01,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 478. [2020-08-19 05:56:01,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-19 05:56:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 575 transitions. [2020-08-19 05:56:01,147 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 575 transitions. Word has length 97 [2020-08-19 05:56:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:01,148 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 575 transitions. [2020-08-19 05:56:01,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:56:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 575 transitions. [2020-08-19 05:56:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 05:56:01,150 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:01,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:01,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:56:01,150 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:01,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1243451195, now seen corresponding path program 1 times [2020-08-19 05:56:01,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:01,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877197337] [2020-08-19 05:56:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,485 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:01,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:56:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:56:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 05:56:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:56:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:01,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877197337] [2020-08-19 05:56:01,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:01,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 05:56:01,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264827997] [2020-08-19 05:56:01,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:56:01,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:01,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:56:01,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:56:01,658 INFO L87 Difference]: Start difference. First operand 478 states and 575 transitions. Second operand 11 states. [2020-08-19 05:56:02,076 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:02,329 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:02,573 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:03,357 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:03,626 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:03,897 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:04,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:04,904 INFO L93 Difference]: Finished difference Result 1015 states and 1308 transitions. [2020-08-19 05:56:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:56:04,905 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-19 05:56:04,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:04,909 INFO L225 Difference]: With dead ends: 1015 [2020-08-19 05:56:04,909 INFO L226 Difference]: Without dead ends: 565 [2020-08-19 05:56:04,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:56:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-08-19 05:56:05,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 486. [2020-08-19 05:56:05,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-19 05:56:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2020-08-19 05:56:05,003 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 97 [2020-08-19 05:56:05,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:05,004 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2020-08-19 05:56:05,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:56:05,004 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2020-08-19 05:56:05,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 05:56:05,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:05,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:05,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:56:05,007 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:05,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:05,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1573216956, now seen corresponding path program 1 times [2020-08-19 05:56:05,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:05,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945120611] [2020-08-19 05:56:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,309 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:05,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:56:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:56:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 05:56:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:56:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:05,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945120611] [2020-08-19 05:56:05,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:05,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 05:56:05,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028157266] [2020-08-19 05:56:05,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:56:05,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:05,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:56:05,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:56:05,438 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 7 states. [2020-08-19 05:56:05,750 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:06,251 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:08,481 INFO L93 Difference]: Finished difference Result 1503 states and 1948 transitions. [2020-08-19 05:56:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:56:08,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-19 05:56:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:08,488 INFO L225 Difference]: With dead ends: 1503 [2020-08-19 05:56:08,489 INFO L226 Difference]: Without dead ends: 1045 [2020-08-19 05:56:08,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:56:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-08-19 05:56:08,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 971. [2020-08-19 05:56:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-08-19 05:56:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1183 transitions. [2020-08-19 05:56:08,657 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1183 transitions. Word has length 97 [2020-08-19 05:56:08,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:08,657 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1183 transitions. [2020-08-19 05:56:08,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:56:08,658 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1183 transitions. [2020-08-19 05:56:08,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-19 05:56:08,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:08,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:08,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:56:08,660 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:08,661 INFO L82 PathProgramCache]: Analyzing trace with hash 164101122, now seen corresponding path program 1 times [2020-08-19 05:56:08,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:08,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994425254] [2020-08-19 05:56:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,987 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 05:56:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 05:56:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 05:56:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 05:56:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:09,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994425254] [2020-08-19 05:56:09,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:09,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:56:09,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506464583] [2020-08-19 05:56:09,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:56:09,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:09,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:56:09,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:56:09,163 INFO L87 Difference]: Start difference. First operand 971 states and 1183 transitions. Second operand 12 states. [2020-08-19 05:56:09,671 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:10,286 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:10,926 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:11,268 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:11,520 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:11,818 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:12,102 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:14,152 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:14,490 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:15,173 INFO L93 Difference]: Finished difference Result 2749 states and 3568 transitions. [2020-08-19 05:56:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 05:56:15,174 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-19 05:56:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:15,188 INFO L225 Difference]: With dead ends: 2749 [2020-08-19 05:56:15,189 INFO L226 Difference]: Without dead ends: 2004 [2020-08-19 05:56:15,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 05:56:15,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-08-19 05:56:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1704. [2020-08-19 05:56:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-08-19 05:56:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2058 transitions. [2020-08-19 05:56:15,506 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2058 transitions. Word has length 101 [2020-08-19 05:56:15,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:15,506 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2058 transitions. [2020-08-19 05:56:15,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:56:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2058 transitions. [2020-08-19 05:56:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-19 05:56:15,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:15,512 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:15,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:56:15,512 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1947078735, now seen corresponding path program 1 times [2020-08-19 05:56:15,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:15,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049936439] [2020-08-19 05:56:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,838 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:15,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:56:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:56:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:56:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:56:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 05:56:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:56:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:56:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-19 05:56:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-19 05:56:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 05:56:16,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049936439] [2020-08-19 05:56:16,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:56:16,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 05:56:16,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739058289] [2020-08-19 05:56:16,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 05:56:16,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:16,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 05:56:16,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:56:16,170 INFO L87 Difference]: Start difference. First operand 1704 states and 2058 transitions. Second operand 16 states. [2020-08-19 05:56:17,113 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:17,464 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 05:56:17,752 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 05:56:18,024 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 05:56:18,694 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 05:56:18,931 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:19,278 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 05:56:19,757 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 05:56:20,937 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:21,518 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:22,032 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-19 05:56:22,411 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:22,984 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:23,409 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:23,992 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 05:56:24,417 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:25,162 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-19 05:56:25,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:25,794 INFO L93 Difference]: Finished difference Result 3639 states and 4528 transitions. [2020-08-19 05:56:25,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-19 05:56:25,795 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-19 05:56:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:25,808 INFO L225 Difference]: With dead ends: 3639 [2020-08-19 05:56:25,809 INFO L226 Difference]: Without dead ends: 2149 [2020-08-19 05:56:25,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=682, Invalid=2740, Unknown=0, NotChecked=0, Total=3422 [2020-08-19 05:56:25,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2020-08-19 05:56:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1971. [2020-08-19 05:56:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-08-19 05:56:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2328 transitions. [2020-08-19 05:56:26,235 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2328 transitions. Word has length 178 [2020-08-19 05:56:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:26,235 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 2328 transitions. [2020-08-19 05:56:26,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 05:56:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2328 transitions. [2020-08-19 05:56:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-19 05:56:26,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:26,245 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-19 05:56:26,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:56:26,246 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:26,246 INFO L82 PathProgramCache]: Analyzing trace with hash 477472839, now seen corresponding path program 1 times [2020-08-19 05:56:26,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:26,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704876471] [2020-08-19 05:56:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,608 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:56:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:56:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:56:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 05:56:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:56:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 05:56:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:26,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-19 05:56:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:56:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:56:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-19 05:56:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-19 05:56:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-19 05:56:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-19 05:56:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-19 05:56:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 77 proven. 31 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-08-19 05:56:27,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704876471] [2020-08-19 05:56:27,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:56:27,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:56:27,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353179516] [2020-08-19 05:56:27,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:56:27,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:27,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:56:27,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:56:27,274 INFO L87 Difference]: Start difference. First operand 1971 states and 2328 transitions. Second operand 15 states. [2020-08-19 05:56:28,720 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:28,988 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:29,231 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:29,459 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:29,689 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:30,766 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:31,236 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 05:56:31,710 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 05:56:31,992 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:35,245 INFO L93 Difference]: Finished difference Result 5414 states and 6621 transitions. [2020-08-19 05:56:35,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 05:56:35,246 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 301 [2020-08-19 05:56:35,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:35,265 INFO L225 Difference]: With dead ends: 5414 [2020-08-19 05:56:35,265 INFO L226 Difference]: Without dead ends: 3267 [2020-08-19 05:56:35,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 05:56:35,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2020-08-19 05:56:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2803. [2020-08-19 05:56:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2803 states. [2020-08-19 05:56:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3345 transitions. [2020-08-19 05:56:35,870 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3345 transitions. Word has length 301 [2020-08-19 05:56:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:35,871 INFO L479 AbstractCegarLoop]: Abstraction has 2803 states and 3345 transitions. [2020-08-19 05:56:35,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:56:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3345 transitions. [2020-08-19 05:56:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-19 05:56:35,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:35,883 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-19 05:56:35,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:56:35,883 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:35,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1744919842, now seen corresponding path program 1 times [2020-08-19 05:56:35,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:35,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774845741] [2020-08-19 05:56:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,197 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:56:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:56:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:56:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 05:56:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:56:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 05:56:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:56:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-19 05:56:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:56:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:56:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-19 05:56:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:56:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-19 05:56:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-19 05:56:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 85 proven. 42 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-08-19 05:56:36,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774845741] [2020-08-19 05:56:36,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:56:36,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 05:56:36,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375768681] [2020-08-19 05:56:36,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 05:56:36,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 05:56:36,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:56:36,581 INFO L87 Difference]: Start difference. First operand 2803 states and 3345 transitions. Second operand 16 states. [2020-08-19 05:56:37,292 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:37,755 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:38,026 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:38,310 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:38,935 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:40,048 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189