/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:01:33,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:01:33,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:01:34,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:01:34,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:01:34,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:01:34,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:01:34,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:01:34,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:01:34,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:01:34,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:01:34,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:01:34,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:01:34,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:01:34,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:01:34,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:01:34,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:01:34,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:01:34,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:01:34,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:01:34,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:01:34,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:01:34,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:01:34,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:01:34,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:01:34,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:01:34,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:01:34,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:01:34,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:01:34,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:01:34,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:01:34,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:01:34,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:01:34,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:01:34,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:01:34,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:01:34,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:01:34,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:01:34,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:01:34,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:01:34,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:01:34,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:01:34,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:01:34,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:01:34,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:01:34,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:01:34,097 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:01:34,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:01:34,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:01:34,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:01:34,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:01:34,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:01:34,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:01:34,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:01:34,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:01:34,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:01:34,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:01:34,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:01:34,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:01:34,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:01:34,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:01:34,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:01:34,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:01:34,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:01:34,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:01:34,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:01:34,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:01:34,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:01:34,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:01:34,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:01:34,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:01:34,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:01:34,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:01:34,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:01:34,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:01:34,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:01:34,471 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:01:34,472 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-19 01:01:34,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3021aa67a/234ab12dee4f41bb82cedd07d36eefb2/FLAG463c961c6 [2020-08-19 01:01:35,118 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:01:35,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-19 01:01:35,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3021aa67a/234ab12dee4f41bb82cedd07d36eefb2/FLAG463c961c6 [2020-08-19 01:01:35,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3021aa67a/234ab12dee4f41bb82cedd07d36eefb2 [2020-08-19 01:01:35,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:01:35,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:01:35,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:01:35,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:01:35,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:01:35,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:01:35" (1/1) ... [2020-08-19 01:01:35,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed0b866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:35, skipping insertion in model container [2020-08-19 01:01:35,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:01:35" (1/1) ... [2020-08-19 01:01:35,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:01:35,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:01:35,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:01:35,916 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:01:36,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:01:36,102 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:01:36,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:36 WrapperNode [2020-08-19 01:01:36,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:01:36,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:01:36,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:01:36,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:01:36,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:36" (1/1) ... [2020-08-19 01:01:36,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:36" (1/1) ... [2020-08-19 01:01:36,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:36" (1/1) ... [2020-08-19 01:01:36,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:36" (1/1) ... [2020-08-19 01:01:36,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:36" (1/1) ... [2020-08-19 01:01:36,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:36" (1/1) ... [2020-08-19 01:01:36,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:36" (1/1) ... [2020-08-19 01:01:36,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:01:36,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:01:36,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:01:36,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:01:36,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:01:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:01:36,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:01:36,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:01:36,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:01:36,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:01:36,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:01:36,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:01:36,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:01:36,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:01:36,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:01:36,319 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:01:36,319 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:01:36,319 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:01:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:01:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:01:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:01:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:01:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:01:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:01:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:01:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:01:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:01:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:01:36,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:01:36,323 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:01:36,324 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:01:36,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:01:36,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:01:36,325 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:01:36,325 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:01:36,325 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:01:36,325 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:01:36,325 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:01:36,326 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:01:36,326 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:01:36,326 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:01:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:01:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:01:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:01:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 01:01:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:01:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:01:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:01:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:01:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:01:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:01:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:01:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:01:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:01:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:01:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:01:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:01:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:01:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:01:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:01:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:01:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:01:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:01:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:01:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:01:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:01:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:01:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:01:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:01:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:01:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:01:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:01:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:01:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:01:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:01:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:01:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:01:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:01:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:01:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:01:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:01:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:01:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:01:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:01:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:01:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:01:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:01:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:01:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:01:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:01:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:01:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 01:01:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:01:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:01:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:01:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:01:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:01:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:01:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:01:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:01:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:01:37,373 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:01:37,374 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:01:37,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:01:37 BoogieIcfgContainer [2020-08-19 01:01:37,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:01:37,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:01:37,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:01:37,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:01:37,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:01:35" (1/3) ... [2020-08-19 01:01:37,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1056ba78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:01:37, skipping insertion in model container [2020-08-19 01:01:37,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:36" (2/3) ... [2020-08-19 01:01:37,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1056ba78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:01:37, skipping insertion in model container [2020-08-19 01:01:37,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:01:37" (3/3) ... [2020-08-19 01:01:37,388 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-08-19 01:01:37,398 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:01:37,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:01:37,420 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:01:37,445 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:01:37,446 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:01:37,446 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:01:37,446 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:01:37,446 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:01:37,446 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:01:37,446 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:01:37,447 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:01:37,468 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 01:01:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:01:37,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:37,480 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] [2020-08-19 01:01:37,480 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:37,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:37,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1488722281, now seen corresponding path program 1 times [2020-08-19 01:01:37,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:37,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533600342] [2020-08-19 01:01:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,253 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:01:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:01:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:38,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533600342] [2020-08-19 01:01:38,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:38,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:01:38,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819019396] [2020-08-19 01:01:38,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:01:38,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:38,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:01:38,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:01:38,437 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-19 01:01:39,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:39,517 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-19 01:01:39,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:01:39,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 01:01:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:39,537 INFO L225 Difference]: With dead ends: 306 [2020-08-19 01:01:39,537 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 01:01:39,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:01:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 01:01:39,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-19 01:01:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 01:01:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-19 01:01:39,682 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-19 01:01:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:39,683 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-19 01:01:39,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:01:39,684 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-19 01:01:39,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 01:01:39,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:39,690 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] [2020-08-19 01:01:39,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:01:39,691 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:39,692 INFO L82 PathProgramCache]: Analyzing trace with hash 469599371, now seen corresponding path program 1 times [2020-08-19 01:01:39,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:39,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550584261] [2020-08-19 01:01:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:40,095 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:40,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:40,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:40,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:40,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:40,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:01:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:01:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:40,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550584261] [2020-08-19 01:01:40,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:40,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:01:40,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754064230] [2020-08-19 01:01:40,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:01:40,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:40,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:01:40,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:01:40,140 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-19 01:01:40,531 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:41,371 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-19 01:01:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:01:41,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 01:01:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:41,375 INFO L225 Difference]: With dead ends: 235 [2020-08-19 01:01:41,376 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 01:01:41,378 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 [2020-08-19 01:01:41,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 01:01:41,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-19 01:01:41,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 01:01:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-19 01:01:41,444 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-19 01:01:41,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:41,444 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-19 01:01:41,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:01:41,444 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-19 01:01:41,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 01:01:41,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:41,447 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] [2020-08-19 01:01:41,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:01:41,447 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:41,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:41,448 INFO L82 PathProgramCache]: Analyzing trace with hash 305445596, now seen corresponding path program 1 times [2020-08-19 01:01:41,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:41,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422850561] [2020-08-19 01:01:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:41,780 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:41,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:41,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:41,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:41,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:41,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:01:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:41,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:01:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:41,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422850561] [2020-08-19 01:01:41,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:41,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:01:41,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632487219] [2020-08-19 01:01:41,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:01:41,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:41,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:01:41,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:01:41,857 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-19 01:01:42,179 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:42,512 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:42,764 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:43,002 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:44,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:44,288 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-19 01:01:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:01:44,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 01:01:44,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:44,292 INFO L225 Difference]: With dead ends: 248 [2020-08-19 01:01:44,292 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 01:01:44,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:01:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 01:01:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-19 01:01:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 01:01:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-19 01:01:44,329 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-19 01:01:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:44,329 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-19 01:01:44,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:01:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-19 01:01:44,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 01:01:44,332 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:44,332 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] [2020-08-19 01:01:44,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:01:44,332 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:44,333 INFO L82 PathProgramCache]: Analyzing trace with hash 892474279, now seen corresponding path program 1 times [2020-08-19 01:01:44,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:44,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016638916] [2020-08-19 01:01:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,704 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:44,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:01:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:01:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 01:01:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:44,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016638916] [2020-08-19 01:01:44,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:44,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:01:44,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149636741] [2020-08-19 01:01:44,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:01:44,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:44,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:01:44,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:01:44,824 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-19 01:01:45,118 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:46,377 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:47,123 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-19 01:01:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:01:47,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-19 01:01:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:47,127 INFO L225 Difference]: With dead ends: 345 [2020-08-19 01:01:47,127 INFO L226 Difference]: Without dead ends: 246 [2020-08-19 01:01:47,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:01:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-19 01:01:47,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-19 01:01:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-19 01:01:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-19 01:01:47,199 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-19 01:01:47,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:47,199 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-19 01:01:47,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:01:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-19 01:01:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 01:01:47,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:47,202 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] [2020-08-19 01:01:47,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:01:47,203 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:47,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:47,203 INFO L82 PathProgramCache]: Analyzing trace with hash 861206730, now seen corresponding path program 1 times [2020-08-19 01:01:47,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:47,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412127725] [2020-08-19 01:01:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,565 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:47,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:01:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 01:01:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 01:01:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:47,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412127725] [2020-08-19 01:01:47,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:47,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:01:47,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471037201] [2020-08-19 01:01:47,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:01:47,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:47,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:01:47,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:01:47,687 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 12 states. [2020-08-19 01:01:48,247 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:48,553 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:48,793 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:49,033 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:49,565 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:50,539 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:50,864 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:51,110 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:51,370 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:51,651 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:51,901 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:53,188 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:53,529 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:54,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:54,174 INFO L93 Difference]: Finished difference Result 713 states and 919 transitions. [2020-08-19 01:01:54,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:01:54,175 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-19 01:01:54,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:54,186 INFO L225 Difference]: With dead ends: 713 [2020-08-19 01:01:54,188 INFO L226 Difference]: Without dead ends: 534 [2020-08-19 01:01:54,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:01:54,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-19 01:01:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 472. [2020-08-19 01:01:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-08-19 01:01:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 553 transitions. [2020-08-19 01:01:54,302 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 553 transitions. Word has length 79 [2020-08-19 01:01:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:54,303 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 553 transitions. [2020-08-19 01:01:54,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:01:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 553 transitions. [2020-08-19 01:01:54,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-19 01:01:54,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:54,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 01:01:54,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:01:54,308 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:54,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:54,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1327678130, now seen corresponding path program 1 times [2020-08-19 01:01:54,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:54,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281065338] [2020-08-19 01:01:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,591 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:01:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:01:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:01:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:01:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 01:01:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 01:01:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:01:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 01:01:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-19 01:01:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 01:01:54,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281065338] [2020-08-19 01:01:54,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:54,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:01:54,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154527807] [2020-08-19 01:01:54,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:01:54,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:54,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:01:54,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:01:54,848 INFO L87 Difference]: Start difference. First operand 472 states and 553 transitions. Second operand 13 states. [2020-08-19 01:01:55,471 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:56,166 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:56,700 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:56,958 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 01:01:57,222 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:57,466 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:57,728 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:57,987 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 01:01:58,293 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:58,576 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:02:00,168 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:00,417 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:02:00,658 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:00,893 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:02:01,298 INFO L93 Difference]: Finished difference Result 957 states and 1212 transitions. [2020-08-19 01:02:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 01:02:01,299 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-08-19 01:02:01,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:02:01,306 INFO L225 Difference]: With dead ends: 957 [2020-08-19 01:02:01,306 INFO L226 Difference]: Without dead ends: 509 [2020-08-19 01:02:01,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 01:02:01,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-19 01:02:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 442. [2020-08-19 01:02:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-19 01:02:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-08-19 01:02:01,395 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 138 [2020-08-19 01:02:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:02:01,396 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-08-19 01:02:01,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:02:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-08-19 01:02:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 01:02:01,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:02:01,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:02:01,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:02:01,399 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:02:01,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:02:01,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1681399932, now seen corresponding path program 1 times [2020-08-19 01:02:01,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:02:01,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884087243] [2020-08-19 01:02:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:02:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,672 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:02:01,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:02:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:02:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:02:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:02:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:02:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:02:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:02:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:02:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 01:02:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 01:02:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:02:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 01:02:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 01:02:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 01:02:01,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884087243] [2020-08-19 01:02:01,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:02:01,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:02:01,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989133214] [2020-08-19 01:02:01,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:02:01,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:02:01,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:02:01,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:02:01,843 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 12 states. [2020-08-19 01:02:02,538 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:02,759 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:02,971 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:03,539 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:03,781 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:04,011 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:04,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:02:04,898 INFO L93 Difference]: Finished difference Result 807 states and 985 transitions. [2020-08-19 01:02:04,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:02:04,899 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-19 01:02:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:02:04,903 INFO L225 Difference]: With dead ends: 807 [2020-08-19 01:02:04,903 INFO L226 Difference]: Without dead ends: 389 [2020-08-19 01:02:04,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:02:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-19 01:02:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2020-08-19 01:02:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-19 01:02:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2020-08-19 01:02:04,988 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 130 [2020-08-19 01:02:04,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:02:04,988 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2020-08-19 01:02:04,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:02:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2020-08-19 01:02:04,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 01:02:04,991 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:02:04,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:02:04,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:02:04,992 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:02:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:02:04,992 INFO L82 PathProgramCache]: Analyzing trace with hash 34208085, now seen corresponding path program 1 times [2020-08-19 01:02:04,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:02:04,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463111073] [2020-08-19 01:02:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:02:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,236 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:02:05,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:02:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:02:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:02:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:02:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:02:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:02:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:02:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:02:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:02:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 01:02:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 01:02:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:02:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 01:02:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 01:02:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 01:02:05,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463111073] [2020-08-19 01:02:05,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:02:05,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:02:05,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641066480] [2020-08-19 01:02:05,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:02:05,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:02:05,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:02:05,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:02:05,386 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand 10 states. [2020-08-19 01:02:06,702 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:06,923 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:02:07,158 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:07,408 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:07,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:02:07,754 INFO L93 Difference]: Finished difference Result 670 states and 812 transitions. [2020-08-19 01:02:07,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:02:07,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-19 01:02:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:02:07,758 INFO L225 Difference]: With dead ends: 670 [2020-08-19 01:02:07,758 INFO L226 Difference]: Without dead ends: 394 [2020-08-19 01:02:07,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:02:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-19 01:02:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 368. [2020-08-19 01:02:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-19 01:02:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 430 transitions. [2020-08-19 01:02:07,825 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 430 transitions. Word has length 134 [2020-08-19 01:02:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:02:07,826 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 430 transitions. [2020-08-19 01:02:07,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:02:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 430 transitions. [2020-08-19 01:02:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 01:02:07,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:02:07,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:02:07,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:02:07,829 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:02:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:02:07,829 INFO L82 PathProgramCache]: Analyzing trace with hash -475265005, now seen corresponding path program 1 times [2020-08-19 01:02:07,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:02:07,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702818862] [2020-08-19 01:02:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:02:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,120 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:02:08,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:02:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:02:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:02:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:02:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:02:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:02:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:02:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:02:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:02:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 01:02:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 01:02:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:02:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 01:02:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 01:02:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 01:02:08,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702818862] [2020-08-19 01:02:08,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:02:08,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:02:08,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2667375] [2020-08-19 01:02:08,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:02:08,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:02:08,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:02:08,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:02:08,259 INFO L87 Difference]: Start difference. First operand 368 states and 430 transitions. Second operand 10 states. [2020-08-19 01:02:08,682 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:02:10,133 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:10,383 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:10,642 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:10,939 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:02:11,226 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:11,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:02:11,547 INFO L93 Difference]: Finished difference Result 401 states and 482 transitions. [2020-08-19 01:02:11,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:02:11,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-19 01:02:11,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:02:11,552 INFO L225 Difference]: With dead ends: 401 [2020-08-19 01:02:11,552 INFO L226 Difference]: Without dead ends: 398 [2020-08-19 01:02:11,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:02:11,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-08-19 01:02:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 368. [2020-08-19 01:02:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-19 01:02:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 429 transitions. [2020-08-19 01:02:11,642 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 429 transitions. Word has length 134 [2020-08-19 01:02:11,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:02:11,644 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 429 transitions. [2020-08-19 01:02:11,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:02:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 429 transitions. [2020-08-19 01:02:11,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-19 01:02:11,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:02:11,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 01:02:11,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:02:11,647 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:02:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:02:11,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1918338429, now seen corresponding path program 1 times [2020-08-19 01:02:11,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:02:11,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325831995] [2020-08-19 01:02:11,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:02:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:11,959 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:02:11,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:02:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:11,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:02:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:11,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:02:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:02:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:02:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:11,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:02:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:02:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:02:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:02:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 01:02:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 01:02:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:02:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 01:02:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-19 01:02:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 01:02:12,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325831995] [2020-08-19 01:02:12,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:02:12,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:02:12,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259483996] [2020-08-19 01:02:12,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:02:12,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:02:12,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:02:12,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:02:12,138 INFO L87 Difference]: Start difference. First operand 368 states and 429 transitions. Second operand 12 states. [2020-08-19 01:02:12,532 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:13,523 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:02:14,019 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:02:14,285 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:02:14,523 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:02:14,817 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:15,070 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:02:15,290 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:02:16,743 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:02:17,032 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:02:17,875 INFO L93 Difference]: Finished difference Result 881 states and 1104 transitions. [2020-08-19 01:02:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 01:02:17,876 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-19 01:02:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:02:17,881 INFO L225 Difference]: With dead ends: 881 [2020-08-19 01:02:17,881 INFO L226 Difference]: Without dead ends: 600 [2020-08-19 01:02:17,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-19 01:02:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-19 01:02:17,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 513. [2020-08-19 01:02:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-19 01:02:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 606 transitions. [2020-08-19 01:02:17,985 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 606 transitions. Word has length 138 [2020-08-19 01:02:17,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:02:17,986 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 606 transitions. [2020-08-19 01:02:17,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:02:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 606 transitions. [2020-08-19 01:02:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-19 01:02:17,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:02:17,991 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:02:17,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:02:17,991 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:02:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:02:17,992 INFO L82 PathProgramCache]: Analyzing trace with hash -169355685, now seen corresponding path program 2 times [2020-08-19 01:02:17,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:02:17,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435754143] [2020-08-19 01:02:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:02:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,470 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:02:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:02:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:02:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:02:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:02:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:02:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:02:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:02:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:02:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:02:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:02:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:02:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:02:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:02:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 01:02:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-19 01:02:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-19 01:02:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:02:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-19 01:02:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-19 01:02:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 01:02:18,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435754143] [2020-08-19 01:02:18,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:02:18,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 01:02:18,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678851753] [2020-08-19 01:02:18,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 01:02:18,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:02:18,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 01:02:18,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:02:18,855 INFO L87 Difference]: Start difference. First operand 513 states and 606 transitions. Second operand 14 states. [2020-08-19 01:02:19,395 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:02:20,014 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:02:20,946 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:21,278 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:02:21,541 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:02:21,791 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:22,066 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:02:22,348 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:02:23,683 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:02:23,950 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:25,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:02:25,109 INFO L93 Difference]: Finished difference Result 1240 states and 1606 transitions. [2020-08-19 01:02:25,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 01:02:25,110 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-08-19 01:02:25,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:02:25,115 INFO L225 Difference]: With dead ends: 1240 [2020-08-19 01:02:25,115 INFO L226 Difference]: Without dead ends: 814 [2020-08-19 01:02:25,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 01:02:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-08-19 01:02:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 511. [2020-08-19 01:02:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 01:02:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2020-08-19 01:02:25,227 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 196 [2020-08-19 01:02:25,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:02:25,228 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2020-08-19 01:02:25,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 01:02:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2020-08-19 01:02:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-19 01:02:25,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:02:25,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:02:25,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:02:25,232 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:02:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:02:25,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1150491295, now seen corresponding path program 3 times [2020-08-19 01:02:25,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:02:25,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892316221] [2020-08-19 01:02:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:02:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,523 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:02:25,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:02:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:02:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:02:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:02:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:02:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:02:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:02:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:02:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:02:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:02:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:02:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:02:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:02:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 01:02:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 01:02:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:02:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 01:02:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 01:02:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-19 01:02:25,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892316221] [2020-08-19 01:02:25,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:02:25,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:02:25,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423702695] [2020-08-19 01:02:25,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:02:25,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:02:25,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:02:25,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:02:25,904 INFO L87 Difference]: Start difference. First operand 511 states and 603 transitions. Second operand 13 states. [2020-08-19 01:02:27,028 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:02:27,302 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:02:28,862 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:02:29,113 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:02:29,355 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:02:29,811 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-19 01:02:31,437 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-19 01:02:31,712 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:02:32,001 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:02:32,264 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:02:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:02:33,322 INFO L93 Difference]: Finished difference Result 1408 states and 1753 transitions. [2020-08-19 01:02:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 01:02:33,323 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-08-19 01:02:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:02:33,329 INFO L225 Difference]: With dead ends: 1408 [2020-08-19 01:02:33,329 INFO L226 Difference]: Without dead ends: 982 [2020-08-19 01:02:33,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 01:02:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-08-19 01:02:33,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 833. [2020-08-19 01:02:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-08-19 01:02:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 968 transitions. [2020-08-19 01:02:33,477 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 968 transitions. Word has length 192 [2020-08-19 01:02:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:02:33,479 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 968 transitions. [2020-08-19 01:02:33,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:02:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 968 transitions. [2020-08-19 01:02:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-19 01:02:33,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:02:33,483 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:02:33,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:02:33,484 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:02:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:02:33,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1185901215, now seen corresponding path program 1 times [2020-08-19 01:02:33,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:02:33,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888190271] [2020-08-19 01:02:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:02:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,772 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:02:33,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:02:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:02:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:02:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:02:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:02:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:02:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:02:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:02:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:02:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:02:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:02:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:02:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:02:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 01:02:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 01:02:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:02:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:02:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:02:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 01:02:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 01:02:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:02:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-19 01:02:33,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888190271] [2020-08-19 01:02:33,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:02:33,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:02:33,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112145330] [2020-08-19 01:02:33,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:02:33,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:02:33,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:02:33,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:02:33,996 INFO L87 Difference]: Start difference. First operand 833 states and 968 transitions. Second operand 13 states. [2020-08-19 01:02:34,674 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:34,933 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:02:35,187 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187