/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:03:10,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:03:10,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:03:10,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:03:10,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:03:10,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:03:10,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:03:10,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:03:10,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:03:11,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:03:11,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:03:11,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:03:11,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:03:11,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:03:11,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:03:11,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:03:11,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:03:11,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:03:11,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:03:11,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:03:11,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:03:11,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:03:11,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:03:11,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:03:11,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:03:11,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:03:11,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:03:11,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:03:11,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:03:11,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:03:11,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:03:11,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:03:11,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:03:11,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:03:11,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:03:11,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:03:11,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:03:11,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:03:11,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:03:11,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:03:11,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:03:11,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:03:11,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:03:11,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:03:11,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:03:11,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:03:11,098 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:03:11,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:03:11,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:03:11,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:03:11,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:03:11,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:03:11,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:03:11,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:03:11,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:03:11,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:03:11,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:03:11,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:03:11,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:03:11,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:03:11,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:03:11,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:03:11,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:03:11,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:03:11,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:03:11,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:03:11,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:03:11,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:03:11,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:03:11,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:03:11,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:03:11,103 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 [2020-08-18 16:03:11,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:03:11,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:03:11,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:03:11,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:03:11,416 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:03:11,417 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-08-18 16:03:11,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/696840a86/ddc1946e1a0a402c80d523ff4e03492f/FLAGdf2cc098d [2020-08-18 16:03:11,988 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:03:11,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-08-18 16:03:12,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/696840a86/ddc1946e1a0a402c80d523ff4e03492f/FLAGdf2cc098d [2020-08-18 16:03:12,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/696840a86/ddc1946e1a0a402c80d523ff4e03492f [2020-08-18 16:03:12,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:03:12,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:03:12,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:03:12,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:03:12,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:03:12,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:03:12" (1/1) ... [2020-08-18 16:03:12,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b44b751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12, skipping insertion in model container [2020-08-18 16:03:12,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:03:12" (1/1) ... [2020-08-18 16:03:12,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:03:12,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:03:12,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:03:12,794 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:03:12,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:03:12,975 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:03:12,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12 WrapperNode [2020-08-18 16:03:12,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:03:12,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:03:12,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:03:12,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:03:12,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12" (1/1) ... [2020-08-18 16:03:12,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12" (1/1) ... [2020-08-18 16:03:13,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12" (1/1) ... [2020-08-18 16:03:13,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12" (1/1) ... [2020-08-18 16:03:13,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12" (1/1) ... [2020-08-18 16:03:13,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12" (1/1) ... [2020-08-18 16:03:13,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12" (1/1) ... [2020-08-18 16:03:13,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:03:13,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:03:13,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:03:13,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:03:13,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:03:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:03:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:03:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:03:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 16:03:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:03:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:03:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:03:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:03:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:03:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:03:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:03:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:03:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:03:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:03:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:03:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:03:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:03:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:03:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:03:13,137 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:03:13,137 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:03:13,137 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:03:13,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:03:13,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:03:13,137 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:03:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:03:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:03:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:03:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:03:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:03:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:03:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:03:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:03:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:03:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:03:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:03:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:03:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:03:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:03:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:03:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:03:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:03:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:03:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:03:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:03:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:03:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:03:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 16:03:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:03:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:03:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:03:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:03:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:03:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:03:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:03:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:03:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:03:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:03:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:03:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:03:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:03:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:03:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:03:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:03:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:03:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:03:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:03:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:03:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:03:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:03:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:03:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:03:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:03:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:03:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:03:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:03:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:03:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:03:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:03:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:03:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:03:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:03:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:03:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:03:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:03:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:03:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:03:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:03:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:03:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:03:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:03:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:03:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:03:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:03:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:03:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:03:14,216 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:03:14,217 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:03:14,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:03:14 BoogieIcfgContainer [2020-08-18 16:03:14,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:03:14,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:03:14,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:03:14,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:03:14,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:03:12" (1/3) ... [2020-08-18 16:03:14,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40100da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:03:14, skipping insertion in model container [2020-08-18 16:03:14,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:03:12" (2/3) ... [2020-08-18 16:03:14,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40100da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:03:14, skipping insertion in model container [2020-08-18 16:03:14,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:03:14" (3/3) ... [2020-08-18 16:03:14,236 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2020-08-18 16:03:14,246 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:03:14,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:03:14,269 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:03:14,295 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:03:14,295 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:03:14,295 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:03:14,295 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:03:14,296 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:03:14,296 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:03:14,296 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:03:14,296 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:03:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-18 16:03:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:03:14,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:14,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:14,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash 135364863, now seen corresponding path program 1 times [2020-08-18 16:03:14,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:14,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092613949] [2020-08-18 16:03:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:14,936 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:14,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:15,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:15,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:15,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:03:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:15,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:03:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:15,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092613949] [2020-08-18 16:03:15,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:15,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:03:15,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575893263] [2020-08-18 16:03:15,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:03:15,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:15,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:03:15,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:03:15,059 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 3 states. [2020-08-18 16:03:16,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:16,179 INFO L93 Difference]: Finished difference Result 323 states and 418 transitions. [2020-08-18 16:03:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:03:16,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 16:03:16,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:16,198 INFO L225 Difference]: With dead ends: 323 [2020-08-18 16:03:16,198 INFO L226 Difference]: Without dead ends: 174 [2020-08-18 16:03:16,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:03:16,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-18 16:03:16,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-08-18 16:03:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 16:03:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-18 16:03:16,334 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 46 [2020-08-18 16:03:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:16,335 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-18 16:03:16,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:03:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-18 16:03:16,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 16:03:16,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:16,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:16,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:03:16,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:16,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:16,340 INFO L82 PathProgramCache]: Analyzing trace with hash 327228860, now seen corresponding path program 1 times [2020-08-18 16:03:16,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:16,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476046711] [2020-08-18 16:03:16,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:16,688 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:16,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:16,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:16,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:16,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:16,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:03:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:16,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:03:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:16,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476046711] [2020-08-18 16:03:16,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:16,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:03:16,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118983049] [2020-08-18 16:03:16,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:03:16,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:16,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:03:16,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:03:16,739 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 4 states. [2020-08-18 16:03:17,115 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:18,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:18,052 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2020-08-18 16:03:18,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:03:18,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 16:03:18,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:18,056 INFO L225 Difference]: With dead ends: 256 [2020-08-18 16:03:18,056 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 16:03:18,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:03:18,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 16:03:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-18 16:03:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-18 16:03:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2020-08-18 16:03:18,099 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 47 [2020-08-18 16:03:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:18,100 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2020-08-18 16:03:18,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:03:18,100 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2020-08-18 16:03:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:03:18,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:18,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:18,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:03:18,103 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:18,103 INFO L82 PathProgramCache]: Analyzing trace with hash -207054876, now seen corresponding path program 1 times [2020-08-18 16:03:18,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:18,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633738876] [2020-08-18 16:03:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:18,438 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:18,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:18,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:18,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:18,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:18,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:03:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:18,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:03:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:18,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633738876] [2020-08-18 16:03:18,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:18,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:03:18,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610565034] [2020-08-18 16:03:18,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:03:18,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:18,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:03:18,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:03:18,528 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 8 states. [2020-08-18 16:03:18,868 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:19,186 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:19,423 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:19,647 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:20,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:20,869 INFO L93 Difference]: Finished difference Result 265 states and 323 transitions. [2020-08-18 16:03:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:03:20,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 16:03:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:20,873 INFO L225 Difference]: With dead ends: 265 [2020-08-18 16:03:20,873 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 16:03:20,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:03:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 16:03:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-18 16:03:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-18 16:03:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-08-18 16:03:20,923 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 51 [2020-08-18 16:03:20,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:20,924 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-08-18 16:03:20,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:03:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-08-18 16:03:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:03:20,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:20,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:20,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:03:20,927 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:20,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:20,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1468702982, now seen corresponding path program 1 times [2020-08-18 16:03:20,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:20,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253808130] [2020-08-18 16:03:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,206 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:21,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:03:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:03:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 16:03:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:21,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253808130] [2020-08-18 16:03:21,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:21,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:03:21,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788106605] [2020-08-18 16:03:21,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:03:21,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:21,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:03:21,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:03:21,283 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 6 states. [2020-08-18 16:03:21,575 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:22,673 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:23,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:23,377 INFO L93 Difference]: Finished difference Result 357 states and 439 transitions. [2020-08-18 16:03:23,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:03:23,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 16:03:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:23,382 INFO L225 Difference]: With dead ends: 357 [2020-08-18 16:03:23,382 INFO L226 Difference]: Without dead ends: 250 [2020-08-18 16:03:23,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:03:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-08-18 16:03:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 209. [2020-08-18 16:03:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-18 16:03:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2020-08-18 16:03:23,453 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 64 [2020-08-18 16:03:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:23,454 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2020-08-18 16:03:23,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:03:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2020-08-18 16:03:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 16:03:23,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:23,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:23,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:03:23,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:23,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1930431345, now seen corresponding path program 1 times [2020-08-18 16:03:23,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:23,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046239361] [2020-08-18 16:03:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,722 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:23,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:03:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 16:03:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:03:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:23,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046239361] [2020-08-18 16:03:23,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:23,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:03:23,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183559270] [2020-08-18 16:03:23,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:03:23,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:23,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:03:23,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:03:23,872 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 8 states. [2020-08-18 16:03:24,170 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:25,082 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:25,389 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:25,915 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:26,143 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:26,445 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:27,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:27,447 INFO L93 Difference]: Finished difference Result 622 states and 764 transitions. [2020-08-18 16:03:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:03:27,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-18 16:03:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:27,455 INFO L225 Difference]: With dead ends: 622 [2020-08-18 16:03:27,456 INFO L226 Difference]: Without dead ends: 437 [2020-08-18 16:03:27,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:03:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-08-18 16:03:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 373. [2020-08-18 16:03:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-18 16:03:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 426 transitions. [2020-08-18 16:03:27,553 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 426 transitions. Word has length 78 [2020-08-18 16:03:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:27,554 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 426 transitions. [2020-08-18 16:03:27,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:03:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 426 transitions. [2020-08-18 16:03:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 16:03:27,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:27,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:27,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:03:27,557 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:27,557 INFO L82 PathProgramCache]: Analyzing trace with hash -613018165, now seen corresponding path program 1 times [2020-08-18 16:03:27,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:27,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838005786] [2020-08-18 16:03:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:27,909 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:27,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:27,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:27,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:27,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:27,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:27,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:03:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:27,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:03:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:28,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:28,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:28,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:28,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:28,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 16:03:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:28,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:03:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:28,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838005786] [2020-08-18 16:03:28,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:28,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:03:28,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742828814] [2020-08-18 16:03:28,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:03:28,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:28,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:03:28,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:03:28,066 INFO L87 Difference]: Start difference. First operand 373 states and 426 transitions. Second operand 9 states. [2020-08-18 16:03:28,405 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:29,446 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:29,761 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:30,762 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:31,002 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:31,244 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:31,491 INFO L93 Difference]: Finished difference Result 476 states and 594 transitions. [2020-08-18 16:03:31,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:03:31,491 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-18 16:03:31,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:31,495 INFO L225 Difference]: With dead ends: 476 [2020-08-18 16:03:31,495 INFO L226 Difference]: Without dead ends: 473 [2020-08-18 16:03:31,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:03:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-08-18 16:03:31,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 373. [2020-08-18 16:03:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-18 16:03:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 425 transitions. [2020-08-18 16:03:31,567 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 425 transitions. Word has length 82 [2020-08-18 16:03:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:31,568 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 425 transitions. [2020-08-18 16:03:31,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:03:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 425 transitions. [2020-08-18 16:03:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 16:03:31,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:31,570 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:31,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:03:31,570 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:31,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:31,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1664141551, now seen corresponding path program 1 times [2020-08-18 16:03:31,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:31,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402078367] [2020-08-18 16:03:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,808 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:31,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:03:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:03:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:03:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:03:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:03:31,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402078367] [2020-08-18 16:03:31,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:31,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:03:31,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599864167] [2020-08-18 16:03:31,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:03:31,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:31,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:03:31,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:03:31,952 INFO L87 Difference]: Start difference. First operand 373 states and 425 transitions. Second operand 9 states. [2020-08-18 16:03:32,744 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:32,980 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:03:33,216 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:33,471 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:34,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:34,560 INFO L93 Difference]: Finished difference Result 830 states and 1028 transitions. [2020-08-18 16:03:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:03:34,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-18 16:03:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:34,564 INFO L225 Difference]: With dead ends: 830 [2020-08-18 16:03:34,565 INFO L226 Difference]: Without dead ends: 481 [2020-08-18 16:03:34,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:03:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-08-18 16:03:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 383. [2020-08-18 16:03:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-08-18 16:03:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 435 transitions. [2020-08-18 16:03:34,638 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 435 transitions. Word has length 98 [2020-08-18 16:03:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:34,638 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 435 transitions. [2020-08-18 16:03:34,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:03:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 435 transitions. [2020-08-18 16:03:34,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 16:03:34,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:34,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:34,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:03:34,641 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:34,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:34,641 INFO L82 PathProgramCache]: Analyzing trace with hash -770655213, now seen corresponding path program 1 times [2020-08-18 16:03:34,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:34,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937734226] [2020-08-18 16:03:34,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:34,901 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:34,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:34,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:34,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:34,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:34,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:03:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:34,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:03:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:34,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:35,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:35,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:35,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:35,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:35,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:03:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:35,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:03:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:03:35,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937734226] [2020-08-18 16:03:35,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:35,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:03:35,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134336345] [2020-08-18 16:03:35,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:03:35,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:35,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:03:35,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:03:35,124 INFO L87 Difference]: Start difference. First operand 383 states and 435 transitions. Second operand 11 states. [2020-08-18 16:03:35,729 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:36,002 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:36,226 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:36,805 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:37,045 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:37,277 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:38,408 INFO L93 Difference]: Finished difference Result 850 states and 1050 transitions. [2020-08-18 16:03:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:03:38,409 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-18 16:03:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:38,414 INFO L225 Difference]: With dead ends: 850 [2020-08-18 16:03:38,414 INFO L226 Difference]: Without dead ends: 491 [2020-08-18 16:03:38,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:03:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-18 16:03:38,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-18 16:03:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-18 16:03:38,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 443 transitions. [2020-08-18 16:03:38,489 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 443 transitions. Word has length 98 [2020-08-18 16:03:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:38,489 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 443 transitions. [2020-08-18 16:03:38,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:03:38,490 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 443 transitions. [2020-08-18 16:03:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 16:03:38,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:38,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:38,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:03:38,495 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:38,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:38,495 INFO L82 PathProgramCache]: Analyzing trace with hash -778414572, now seen corresponding path program 1 times [2020-08-18 16:03:38,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:38,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594110250] [2020-08-18 16:03:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,778 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:38,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:03:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:03:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:03:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:03:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:03:38,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594110250] [2020-08-18 16:03:38,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:38,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:03:38,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294668690] [2020-08-18 16:03:38,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:03:38,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:38,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:03:38,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:03:38,930 INFO L87 Difference]: Start difference. First operand 391 states and 443 transitions. Second operand 7 states. [2020-08-18 16:03:39,222 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:39,719 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:41,869 INFO L93 Difference]: Finished difference Result 1153 states and 1472 transitions. [2020-08-18 16:03:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 16:03:41,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-18 16:03:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:41,875 INFO L225 Difference]: With dead ends: 1153 [2020-08-18 16:03:41,876 INFO L226 Difference]: Without dead ends: 786 [2020-08-18 16:03:41,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:03:41,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-08-18 16:03:42,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 687. [2020-08-18 16:03:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-08-18 16:03:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 813 transitions. [2020-08-18 16:03:42,053 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 813 transitions. Word has length 98 [2020-08-18 16:03:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:42,056 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 813 transitions. [2020-08-18 16:03:42,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:03:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 813 transitions. [2020-08-18 16:03:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 16:03:42,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:42,061 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:42,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:03:42,062 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:42,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:42,062 INFO L82 PathProgramCache]: Analyzing trace with hash 469491758, now seen corresponding path program 1 times [2020-08-18 16:03:42,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:42,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807751163] [2020-08-18 16:03:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,316 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:42,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:03:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:03:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:03:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:03:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:03:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:03:42,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807751163] [2020-08-18 16:03:42,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:03:42,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 16:03:42,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168882614] [2020-08-18 16:03:42,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 16:03:42,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:42,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 16:03:42,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 16:03:42,731 INFO L87 Difference]: Start difference. First operand 687 states and 813 transitions. Second operand 17 states. [2020-08-18 16:03:43,399 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:43,776 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:03:44,027 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:44,339 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:44,945 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:45,906 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:46,234 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:46,524 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:46,818 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:47,143 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:47,438 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:48,018 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 16:03:48,566 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 16:03:50,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:50,636 INFO L93 Difference]: Finished difference Result 1418 states and 1746 transitions. [2020-08-18 16:03:50,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 16:03:50,637 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-08-18 16:03:50,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:50,641 INFO L225 Difference]: With dead ends: 1418 [2020-08-18 16:03:50,642 INFO L226 Difference]: Without dead ends: 755 [2020-08-18 16:03:50,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 16:03:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-08-18 16:03:50,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 659. [2020-08-18 16:03:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-08-18 16:03:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 767 transitions. [2020-08-18 16:03:50,761 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 767 transitions. Word has length 102 [2020-08-18 16:03:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:50,762 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 767 transitions. [2020-08-18 16:03:50,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 16:03:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 767 transitions. [2020-08-18 16:03:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 16:03:50,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:50,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:50,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:03:50,766 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:50,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:50,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1698521745, now seen corresponding path program 1 times [2020-08-18 16:03:50,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:50,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018793283] [2020-08-18 16:03:50,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,148 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:51,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:03:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:03:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:03:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:03:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 16:03:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 16:03:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:03:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 16:03:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 16:03:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 16:03:51,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018793283] [2020-08-18 16:03:51,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:03:51,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 16:03:51,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203731703] [2020-08-18 16:03:51,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 16:03:51,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:51,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 16:03:51,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:03:51,572 INFO L87 Difference]: Start difference. First operand 659 states and 767 transitions. Second operand 14 states. [2020-08-18 16:03:52,023 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:52,661 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:54,341 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-18 16:03:54,790 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-08-18 16:03:55,252 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-08-18 16:03:56,024 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:03:56,280 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:56,520 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:56,774 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:58,304 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-08-18 16:03:59,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:59,184 INFO L93 Difference]: Finished difference Result 2026 states and 2659 transitions. [2020-08-18 16:03:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-18 16:03:59,184 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-18 16:03:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:59,196 INFO L225 Difference]: With dead ends: 2026 [2020-08-18 16:03:59,196 INFO L226 Difference]: Without dead ends: 1515 [2020-08-18 16:03:59,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2020-08-18 16:03:59,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-08-18 16:03:59,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1215. [2020-08-18 16:03:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-08-18 16:03:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1429 transitions. [2020-08-18 16:03:59,452 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1429 transitions. Word has length 155 [2020-08-18 16:03:59,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:59,452 INFO L479 AbstractCegarLoop]: Abstraction has 1215 states and 1429 transitions. [2020-08-18 16:03:59,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 16:03:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1429 transitions. [2020-08-18 16:03:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 16:03:59,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:59,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:59,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:03:59,457 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:59,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1973281359, now seen corresponding path program 1 times [2020-08-18 16:03:59,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:59,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649488386] [2020-08-18 16:03:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,720 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:59,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:03:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:03:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:03:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:03:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 16:03:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 16:03:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:03:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 16:03:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 16:03:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 16:04:00,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649488386] [2020-08-18 16:04:00,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:04:00,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 16:04:00,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008720447] [2020-08-18 16:04:00,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 16:04:00,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:04:00,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 16:04:00,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:04:00,013 INFO L87 Difference]: Start difference. First operand 1215 states and 1429 transitions. Second operand 14 states. [2020-08-18 16:04:00,584 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:04:00,835 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:04:01,075 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:04:02,514 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:04:02,748 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:04:02,999 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:04:03,222 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:04:03,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:04:03,429 INFO L93 Difference]: Finished difference Result 1687 states and 2024 transitions. [2020-08-18 16:04:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:04:03,434 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-18 16:04:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:04:03,435 INFO L225 Difference]: With dead ends: 1687 [2020-08-18 16:04:03,436 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:04:03,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-08-18 16:04:03,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:04:03,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:04:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:04:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:04:03,441 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2020-08-18 16:04:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:04:03,442 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:04:03,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 16:04:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:04:03,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:04:03,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:04:03,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:04:04,107 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2020-08-18 16:04:04,652 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2020-08-18 16:04:06,155 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 318 DAG size of output: 285 [2020-08-18 16:04:07,350 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 286 [2020-08-18 16:04:08,117 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 277