/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:19:25,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:19:25,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:19:25,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:19:25,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:19:25,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:19:25,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:19:25,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:19:25,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:19:25,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:19:25,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:19:25,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:19:25,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:19:25,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:19:25,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:19:25,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:19:25,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:19:25,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:19:25,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:19:25,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:19:25,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:19:25,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:19:25,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:19:25,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:19:25,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:19:25,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:19:25,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:19:25,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:19:25,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:19:25,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:19:25,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:19:25,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:19:25,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:19:25,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:19:25,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:19:25,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:19:25,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:19:25,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:19:25,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:19:25,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:19:25,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:19:25,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 01:19:25,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:19:25,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:19:25,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:19:25,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:19:25,738 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:19:25,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:19:25,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:19:25,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:19:25,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:19:25,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:19:25,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:19:25,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:19:25,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:19:25,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:19:25,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:19:25,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:19:25,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:19:25,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:19:25,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:19:25,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:19:25,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:19:25,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:19:25,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:19:25,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:19:25,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:19:25,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:19:25,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:19:25,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:19:25,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:19:25,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:19:26,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:19:26,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:19:26,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:19:26,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:19:26,072 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:19:26,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2020-08-22 01:19:26,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8820a139f/86bb6bb8437743e78219a69ad826878a/FLAG86d25dc73 [2020-08-22 01:19:26,660 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:19:26,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2020-08-22 01:19:26,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8820a139f/86bb6bb8437743e78219a69ad826878a/FLAG86d25dc73 [2020-08-22 01:19:26,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8820a139f/86bb6bb8437743e78219a69ad826878a [2020-08-22 01:19:26,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:19:26,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:19:26,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:19:26,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:19:26,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:19:26,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:19:26" (1/1) ... [2020-08-22 01:19:26,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:26, skipping insertion in model container [2020-08-22 01:19:26,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:19:26" (1/1) ... [2020-08-22 01:19:26,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:19:27,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:19:27,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:19:27,436 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:19:27,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:19:27,724 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:19:27,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:27 WrapperNode [2020-08-22 01:19:27,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:19:27,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:19:27,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:19:27,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:19:27,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:27" (1/1) ... [2020-08-22 01:19:27,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:27" (1/1) ... [2020-08-22 01:19:27,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:27" (1/1) ... [2020-08-22 01:19:27,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:27" (1/1) ... [2020-08-22 01:19:27,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:27" (1/1) ... [2020-08-22 01:19:27,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:27" (1/1) ... [2020-08-22 01:19:27,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:27" (1/1) ... [2020-08-22 01:19:27,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:19:27,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:19:27,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:19:27,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:19:27,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:19:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:19:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:19:27,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:19:27,946 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:19:27,946 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:19:27,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:19:27,947 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:19:27,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:19:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:19:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:19:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:19:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:19:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:19:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:19:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:19:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:19:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:19:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:19:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 01:19:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:19:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:19:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:19:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:19:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:19:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:19:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:19:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:19:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:19:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:19:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:19:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:19:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 01:19:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 01:19:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 01:19:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:19:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:19:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:19:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:19:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:19:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:19:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:19:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:19:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:19:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:19:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:19:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:19:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:19:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:19:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:19:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:19:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:19:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:19:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:19:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:19:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:19:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:19:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:19:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:19:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:19:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 01:19:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 01:19:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 01:19:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:19:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:19:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:19:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:19:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:19:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:19:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:19:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:19:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:19:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:19:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:19:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:19:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:19:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:19:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:19:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:19:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:19:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:19:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:19:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:19:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:19:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:19:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:19:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:19:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:19:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:19:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:19:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 01:19:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:19:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:19:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:19:27,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:19:27,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:19:27,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:19:29,056 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:19:29,056 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:19:29,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:19:29 BoogieIcfgContainer [2020-08-22 01:19:29,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:19:29,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:19:29,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:19:29,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:19:29,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:19:26" (1/3) ... [2020-08-22 01:19:29,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6912dff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:19:29, skipping insertion in model container [2020-08-22 01:19:29,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:19:27" (2/3) ... [2020-08-22 01:19:29,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6912dff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:19:29, skipping insertion in model container [2020-08-22 01:19:29,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:19:29" (3/3) ... [2020-08-22 01:19:29,071 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product36.cil.c [2020-08-22 01:19:29,082 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:19:29,091 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:19:29,106 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:19:29,132 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:19:29,132 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:19:29,132 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:19:29,132 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:19:29,133 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:19:29,133 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:19:29,133 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:19:29,133 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:19:29,156 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-22 01:19:29,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 01:19:29,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:19:29,168 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] [2020-08-22 01:19:29,168 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:19:29,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:19:29,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451371, now seen corresponding path program 1 times [2020-08-22 01:19:29,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:19:29,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261681471] [2020-08-22 01:19:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:19:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:29,921 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:19:29,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:29,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:19:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:29,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:19:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:29,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:19:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:29,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:19:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:30,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:19:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:30,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:19:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:30,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:30,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:19:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:30,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:19:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:19:30,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261681471] [2020-08-22 01:19:30,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:19:30,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:19:30,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812997521] [2020-08-22 01:19:30,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:19:30,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:19:30,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:19:30,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:19:30,072 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-08-22 01:19:31,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:19:31,274 INFO L93 Difference]: Finished difference Result 286 states and 369 transitions. [2020-08-22 01:19:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:19:31,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 01:19:31,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:19:31,291 INFO L225 Difference]: With dead ends: 286 [2020-08-22 01:19:31,292 INFO L226 Difference]: Without dead ends: 159 [2020-08-22 01:19:31,296 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 [2020-08-22 01:19:31,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-22 01:19:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2020-08-22 01:19:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-22 01:19:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2020-08-22 01:19:31,382 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 59 [2020-08-22 01:19:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:19:31,383 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2020-08-22 01:19:31,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:19:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2020-08-22 01:19:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 01:19:31,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:19:31,387 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] [2020-08-22 01:19:31,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:19:31,388 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:19:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:19:31,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1343962066, now seen corresponding path program 1 times [2020-08-22 01:19:31,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:19:31,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860062645] [2020-08-22 01:19:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:19:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,698 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:19:31,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:19:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:19:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:19:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:19:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:19:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:19:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:19:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 01:19:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:19:31,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860062645] [2020-08-22 01:19:31,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:19:31,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:19:31,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879075612] [2020-08-22 01:19:31,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:19:31,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:19:31,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:19:31,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:19:31,789 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 5 states. [2020-08-22 01:19:32,224 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:19:33,129 INFO L93 Difference]: Finished difference Result 218 states and 267 transitions. [2020-08-22 01:19:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:19:33,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 01:19:33,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:19:33,134 INFO L225 Difference]: With dead ends: 218 [2020-08-22 01:19:33,135 INFO L226 Difference]: Without dead ends: 149 [2020-08-22 01:19:33,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:19:33,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-22 01:19:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-22 01:19:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 01:19:33,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-22 01:19:33,198 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 60 [2020-08-22 01:19:33,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:19:33,199 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-22 01:19:33,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:19:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-22 01:19:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 01:19:33,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:19:33,207 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] [2020-08-22 01:19:33,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:19:33,207 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:19:33,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:19:33,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1988567769, now seen corresponding path program 1 times [2020-08-22 01:19:33,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:19:33,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633880093] [2020-08-22 01:19:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:19:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,631 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:19:33,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:19:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:19:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:19:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:19:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:19:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:19:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:19:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 01:19:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:19:33,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633880093] [2020-08-22 01:19:33,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:19:33,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:19:33,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481334138] [2020-08-22 01:19:33,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:19:33,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:19:33,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:19:33,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:19:33,811 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 9 states. [2020-08-22 01:19:34,329 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:19:34,668 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:34,974 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:35,221 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:36,178 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:37,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:19:37,418 INFO L93 Difference]: Finished difference Result 402 states and 496 transitions. [2020-08-22 01:19:37,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 01:19:37,419 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-22 01:19:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:19:37,424 INFO L225 Difference]: With dead ends: 402 [2020-08-22 01:19:37,425 INFO L226 Difference]: Without dead ends: 311 [2020-08-22 01:19:37,426 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 [2020-08-22 01:19:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-22 01:19:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 242. [2020-08-22 01:19:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-22 01:19:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 290 transitions. [2020-08-22 01:19:37,491 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 290 transitions. Word has length 65 [2020-08-22 01:19:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:19:37,491 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 290 transitions. [2020-08-22 01:19:37,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:19:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 290 transitions. [2020-08-22 01:19:37,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 01:19:37,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:19:37,494 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] [2020-08-22 01:19:37,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:19:37,495 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:19:37,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:19:37,495 INFO L82 PathProgramCache]: Analyzing trace with hash 827482166, now seen corresponding path program 1 times [2020-08-22 01:19:37,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:19:37,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354908500] [2020-08-22 01:19:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:19:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,800 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:19:37,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:19:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:19:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:19:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:19:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:19:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:19:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:19:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 01:19:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:19:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 01:19:37,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354908500] [2020-08-22 01:19:37,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:19:37,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:19:37,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943293764] [2020-08-22 01:19:37,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:19:37,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:19:37,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:19:37,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:19:37,909 INFO L87 Difference]: Start difference. First operand 242 states and 290 transitions. Second operand 9 states. [2020-08-22 01:19:38,316 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:19:39,082 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:39,862 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:19:40,197 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:40,480 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:40,729 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:41,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:19:41,313 INFO L93 Difference]: Finished difference Result 631 states and 816 transitions. [2020-08-22 01:19:41,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:19:41,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 01:19:41,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:19:41,319 INFO L225 Difference]: With dead ends: 631 [2020-08-22 01:19:41,319 INFO L226 Difference]: Without dead ends: 417 [2020-08-22 01:19:41,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:19:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-22 01:19:41,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 353. [2020-08-22 01:19:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-08-22 01:19:41,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 423 transitions. [2020-08-22 01:19:41,398 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 423 transitions. Word has length 70 [2020-08-22 01:19:41,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:19:41,398 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 423 transitions. [2020-08-22 01:19:41,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:19:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 423 transitions. [2020-08-22 01:19:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 01:19:41,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:19:41,402 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] [2020-08-22 01:19:41,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:19:41,402 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:19:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:19:41,403 INFO L82 PathProgramCache]: Analyzing trace with hash 361073596, now seen corresponding path program 1 times [2020-08-22 01:19:41,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:19:41,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176232086] [2020-08-22 01:19:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:19:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,698 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:19:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:19:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:19:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:19:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:19:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:19:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:19:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:19:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:19:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:19:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:19:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 01:19:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 01:19:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:19:41,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176232086] [2020-08-22 01:19:41,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:19:41,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:19:41,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841905347] [2020-08-22 01:19:41,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:19:41,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:19:41,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:19:41,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:19:41,883 INFO L87 Difference]: Start difference. First operand 353 states and 423 transitions. Second operand 9 states. [2020-08-22 01:19:42,191 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:19:43,320 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:43,578 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:19:43,847 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:44,132 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:19:45,145 INFO L93 Difference]: Finished difference Result 1112 states and 1489 transitions. [2020-08-22 01:19:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:19:45,147 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-22 01:19:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:19:45,154 INFO L225 Difference]: With dead ends: 1112 [2020-08-22 01:19:45,154 INFO L226 Difference]: Without dead ends: 787 [2020-08-22 01:19:45,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:19:45,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-22 01:19:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 665. [2020-08-22 01:19:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-08-22 01:19:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 802 transitions. [2020-08-22 01:19:45,318 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 802 transitions. Word has length 88 [2020-08-22 01:19:45,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:19:45,319 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 802 transitions. [2020-08-22 01:19:45,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:19:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 802 transitions. [2020-08-22 01:19:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 01:19:45,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:19:45,322 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] [2020-08-22 01:19:45,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:19:45,322 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:19:45,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:19:45,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1750216773, now seen corresponding path program 1 times [2020-08-22 01:19:45,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:19:45,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844932303] [2020-08-22 01:19:45,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:19:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,613 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:19:45,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:19:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:19:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:19:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:19:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:19:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:19:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:19:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:19:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:19:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:19:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 01:19:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 01:19:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:19:45,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844932303] [2020-08-22 01:19:45,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:19:45,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:19:45,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497606266] [2020-08-22 01:19:45,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:19:45,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:19:45,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:19:45,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:19:45,755 INFO L87 Difference]: Start difference. First operand 665 states and 802 transitions. Second operand 9 states. [2020-08-22 01:19:46,794 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:47,102 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:19:47,362 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:47,596 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:48,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:19:48,143 INFO L93 Difference]: Finished difference Result 1429 states and 1823 transitions. [2020-08-22 01:19:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:19:48,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-22 01:19:48,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:19:48,149 INFO L225 Difference]: With dead ends: 1429 [2020-08-22 01:19:48,150 INFO L226 Difference]: Without dead ends: 792 [2020-08-22 01:19:48,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:19:48,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-08-22 01:19:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 685. [2020-08-22 01:19:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-22 01:19:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 822 transitions. [2020-08-22 01:19:48,320 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 822 transitions. Word has length 88 [2020-08-22 01:19:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:19:48,321 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 822 transitions. [2020-08-22 01:19:48,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:19:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 822 transitions. [2020-08-22 01:19:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 01:19:48,323 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:19:48,324 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] [2020-08-22 01:19:48,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:19:48,324 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:19:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:19:48,325 INFO L82 PathProgramCache]: Analyzing trace with hash -364013379, now seen corresponding path program 1 times [2020-08-22 01:19:48,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:19:48,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700353511] [2020-08-22 01:19:48,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:19:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,780 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:19:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:19:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:19:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:19:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:19:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:19:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:19:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:19:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:19:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:19:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:19:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 01:19:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 01:19:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:19:48,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700353511] [2020-08-22 01:19:48,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:19:48,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:19:49,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349370600] [2020-08-22 01:19:49,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:19:49,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:19:49,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:19:49,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:19:49,002 INFO L87 Difference]: Start difference. First operand 685 states and 822 transitions. Second operand 11 states. [2020-08-22 01:19:49,518 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:49,783 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:50,065 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:50,887 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:51,138 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:51,410 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:19:52,028 INFO L93 Difference]: Finished difference Result 1290 states and 1630 transitions. [2020-08-22 01:19:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:19:52,031 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-22 01:19:52,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:19:52,036 INFO L225 Difference]: With dead ends: 1290 [2020-08-22 01:19:52,037 INFO L226 Difference]: Without dead ends: 633 [2020-08-22 01:19:52,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:19:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-08-22 01:19:52,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 556. [2020-08-22 01:19:52,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-22 01:19:52,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 650 transitions. [2020-08-22 01:19:52,148 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 650 transitions. Word has length 88 [2020-08-22 01:19:52,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:19:52,148 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 650 transitions. [2020-08-22 01:19:52,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:19:52,148 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 650 transitions. [2020-08-22 01:19:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 01:19:52,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:19:52,152 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] [2020-08-22 01:19:52,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:19:52,153 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:19:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:19:52,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1797836392, now seen corresponding path program 1 times [2020-08-22 01:19:52,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:19:52,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775590161] [2020-08-22 01:19:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:19:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,526 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:19:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:19:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:19:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:19:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:19:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:19:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:19:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 01:19:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 01:19:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:19:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:19:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:19:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 01:19:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 01:19:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:19:52,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775590161] [2020-08-22 01:19:52,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:19:52,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 01:19:52,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901360365] [2020-08-22 01:19:52,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:19:52,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:19:52,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:19:52,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:19:52,685 INFO L87 Difference]: Start difference. First operand 556 states and 650 transitions. Second operand 12 states. [2020-08-22 01:19:53,238 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:19:54,174 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:19:54,955 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:55,294 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:55,569 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:19:55,875 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:56,160 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:19:57,615 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:19:57,880 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:19:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:19:58,431 INFO L93 Difference]: Finished difference Result 1629 states and 2065 transitions. [2020-08-22 01:19:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 01:19:58,431 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-08-22 01:19:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:19:58,442 INFO L225 Difference]: With dead ends: 1629 [2020-08-22 01:19:58,443 INFO L226 Difference]: Without dead ends: 1277 [2020-08-22 01:19:58,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 01:19:58,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-08-22 01:19:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1157. [2020-08-22 01:19:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-08-22 01:19:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1355 transitions. [2020-08-22 01:19:58,668 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1355 transitions. Word has length 92 [2020-08-22 01:19:58,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:19:58,668 INFO L479 AbstractCegarLoop]: Abstraction has 1157 states and 1355 transitions. [2020-08-22 01:19:58,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:19:58,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1355 transitions. [2020-08-22 01:19:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 01:19:58,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:19:58,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:19:58,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:19:58,673 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:19:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:19:58,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1966372220, now seen corresponding path program 1 times [2020-08-22 01:19:58,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:19:58,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240864896] [2020-08-22 01:19:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:19:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:58,964 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:19:58,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:58,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:19:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:58,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:19:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:58,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:19:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:19:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:19:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:19:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:19:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:19:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:19:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:19:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:19:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:19:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:19:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 01:19:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:19:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 01:19:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 01:19:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:19:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 01:19:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 01:19:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:19:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 01:19:59,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240864896] [2020-08-22 01:19:59,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:19:59,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:19:59,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899191119] [2020-08-22 01:19:59,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:19:59,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:19:59,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:19:59,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:19:59,311 INFO L87 Difference]: Start difference. First operand 1157 states and 1355 transitions. Second operand 16 states. [2020-08-22 01:19:59,886 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:20:00,225 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 01:20:00,508 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 01:20:00,771 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 01:20:01,495 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-22 01:20:01,863 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 01:20:02,209 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 01:20:02,653 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 01:20:03,018 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 01:20:04,104 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:05,228 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-22 01:20:05,745 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-22 01:20:06,099 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:20:06,836 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-22 01:20:07,797 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-22 01:20:08,046 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:08,353 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 01:20:08,617 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:20:09,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:09,310 INFO L93 Difference]: Finished difference Result 2376 states and 2878 transitions. [2020-08-22 01:20:09,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-22 01:20:09,311 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 136 [2020-08-22 01:20:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:09,317 INFO L225 Difference]: With dead ends: 2376 [2020-08-22 01:20:09,317 INFO L226 Difference]: Without dead ends: 1417 [2020-08-22 01:20:09,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=630, Invalid=2562, Unknown=0, NotChecked=0, Total=3192 [2020-08-22 01:20:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-08-22 01:20:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1269. [2020-08-22 01:20:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-22 01:20:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1463 transitions. [2020-08-22 01:20:09,575 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1463 transitions. Word has length 136 [2020-08-22 01:20:09,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:09,576 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1463 transitions. [2020-08-22 01:20:09,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 01:20:09,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1463 transitions. [2020-08-22 01:20:09,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-22 01:20:09,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:09,583 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, 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] [2020-08-22 01:20:09,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:20:09,583 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:09,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:09,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1880321482, now seen corresponding path program 1 times [2020-08-22 01:20:09,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:09,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683260263] [2020-08-22 01:20:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,862 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:09,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:20:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:20:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:20:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:20:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:09,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 01:20:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:20:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 01:20:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:20:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-22 01:20:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-22 01:20:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-22 01:20:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 01:20:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 01:20:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-08-22 01:20:10,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683260263] [2020-08-22 01:20:10,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:20:10,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:20:10,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960710674] [2020-08-22 01:20:10,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:20:10,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:10,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:20:10,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:20:10,261 INFO L87 Difference]: Start difference. First operand 1269 states and 1463 transitions. Second operand 16 states. [2020-08-22 01:20:12,226 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:12,524 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:12,823 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:20:13,103 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:20:13,395 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:14,143 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:20:14,728 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 01:20:15,241 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 01:20:15,873 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:17,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:17,892 INFO L93 Difference]: Finished difference Result 3631 states and 4392 transitions. [2020-08-22 01:20:17,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-22 01:20:17,893 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 244 [2020-08-22 01:20:17,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:17,906 INFO L225 Difference]: With dead ends: 3631 [2020-08-22 01:20:17,907 INFO L226 Difference]: Without dead ends: 2241 [2020-08-22 01:20:17,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=449, Invalid=1807, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 01:20:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2020-08-22 01:20:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1858. [2020-08-22 01:20:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-08-22 01:20:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2154 transitions. [2020-08-22 01:20:18,316 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2154 transitions. Word has length 244 [2020-08-22 01:20:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:18,316 INFO L479 AbstractCegarLoop]: Abstraction has 1858 states and 2154 transitions. [2020-08-22 01:20:18,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 01:20:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2154 transitions. [2020-08-22 01:20:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-08-22 01:20:18,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:18,325 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:18,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:20:18,325 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:18,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1137238651, now seen corresponding path program 1 times [2020-08-22 01:20:18,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:18,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055770185] [2020-08-22 01:20:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,675 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:20:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:20:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:20:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:20:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 01:20:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:20:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:20:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 01:20:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:20:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-22 01:20:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-22 01:20:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-08-22 01:20:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 01:20:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:18,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 01:20:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 90 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-22 01:20:19,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055770185] [2020-08-22 01:20:19,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:20:19,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 01:20:19,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667623463] [2020-08-22 01:20:19,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 01:20:19,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:19,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 01:20:19,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-22 01:20:19,059 INFO L87 Difference]: Start difference. First operand 1858 states and 2154 transitions. Second operand 17 states. [2020-08-22 01:20:19,517 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:19,954 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 01:20:20,203 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:20:20,472 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:20:21,213 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:22,158 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:22,507 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:22,765 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:23,603 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:24,287 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:24,543 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:25,500 INFO L93 Difference]: Finished difference Result 3499 states and 4139 transitions. [2020-08-22 01:20:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 01:20:25,502 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 250 [2020-08-22 01:20:25,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:25,515 INFO L225 Difference]: With dead ends: 3499 [2020-08-22 01:20:25,516 INFO L226 Difference]: Without dead ends: 1909 [2020-08-22 01:20:25,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=385, Invalid=1507, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 01:20:25,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2020-08-22 01:20:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1807. [2020-08-22 01:20:25,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2020-08-22 01:20:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2067 transitions. [2020-08-22 01:20:25,916 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2067 transitions. Word has length 250 [2020-08-22 01:20:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:25,917 INFO L479 AbstractCegarLoop]: Abstraction has 1807 states and 2067 transitions. [2020-08-22 01:20:25,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 01:20:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2067 transitions. [2020-08-22 01:20:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-08-22 01:20:25,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:25,926 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, 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] [2020-08-22 01:20:25,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:20:25,926 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:25,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:25,927 INFO L82 PathProgramCache]: Analyzing trace with hash 507686355, now seen corresponding path program 1 times [2020-08-22 01:20:25,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:25,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258565007] [2020-08-22 01:20:25,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,260 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:20:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:20:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:20:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:20:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 01:20:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:20:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:20:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 01:20:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:20:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 01:20:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 01:20:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 01:20:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-08-22 01:20:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-22 01:20:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 97 proven. 27 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-08-22 01:20:26,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258565007] [2020-08-22 01:20:26,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:20:26,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 01:20:26,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671846630] [2020-08-22 01:20:26,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 01:20:26,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:26,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 01:20:26,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-08-22 01:20:26,652 INFO L87 Difference]: Start difference. First operand 1807 states and 2067 transitions. Second operand 17 states.