/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:11:13,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:11:13,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:11:14,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:11:14,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:11:14,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:11:14,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:11:14,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:11:14,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:11:14,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:11:14,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:11:14,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:11:14,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:11:14,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:11:14,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:11:14,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:11:14,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:11:14,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:11:14,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:11:14,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:11:14,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:11:14,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:11:14,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:11:14,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:11:14,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:11:14,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:11:14,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:11:14,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:11:14,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:11:14,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:11:14,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:11:14,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:11:14,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:11:14,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:11:14,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:11:14,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:11:14,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:11:14,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:11:14,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:11:14,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:11:14,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:11:14,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:11:14,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:11:14,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:11:14,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:11:14,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:11:14,129 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:11:14,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:11:14,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:11:14,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:11:14,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:11:14,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:11:14,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:11:14,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:11:14,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:11:14,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:11:14,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:11:14,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:11:14,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:11:14,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:11:14,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:11:14,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:11:14,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:11:14,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:11:14,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:11:14,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:11:14,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:11:14,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:11:14,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:11:14,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:11:14,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:11:14,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:11:14,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:11:14,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:11:14,503 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:11:14,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:11:14,507 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:11:14,507 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-18 16:11:14,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf69a6709/2232e38d224c46a48048dfe0645f65b2/FLAG229952235 [2020-08-18 16:11:15,138 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:11:15,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-18 16:11:15,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf69a6709/2232e38d224c46a48048dfe0645f65b2/FLAG229952235 [2020-08-18 16:11:15,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf69a6709/2232e38d224c46a48048dfe0645f65b2 [2020-08-18 16:11:15,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:11:15,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:11:15,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:11:15,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:11:15,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:11:15,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:11:15" (1/1) ... [2020-08-18 16:11:15,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4700e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:15, skipping insertion in model container [2020-08-18 16:11:15,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:11:15" (1/1) ... [2020-08-18 16:11:15,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:11:15,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:11:16,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:11:16,060 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:11:16,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:11:16,188 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:11:16,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:16 WrapperNode [2020-08-18 16:11:16,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:11:16,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:11:16,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:11:16,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:11:16,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:16" (1/1) ... [2020-08-18 16:11:16,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:16" (1/1) ... [2020-08-18 16:11:16,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:16" (1/1) ... [2020-08-18 16:11:16,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:16" (1/1) ... [2020-08-18 16:11:16,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:16" (1/1) ... [2020-08-18 16:11:16,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:16" (1/1) ... [2020-08-18 16:11:16,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:16" (1/1) ... [2020-08-18 16:11:16,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:11:16,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:11:16,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:11:16,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:11:16,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:11:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:11:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:11:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:11:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:11:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:11:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:11:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:11:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:11:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:11:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:11:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:11:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:11:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:11:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:11:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:11:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:11:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:11:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:11:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:11:16,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:11:16,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:11:16,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:11:16,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:11:16,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:11:16,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:11:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:11:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:11:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:11:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:11:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:11:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:11:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:11:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:11:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:11:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:11:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:11:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:11:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:11:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:11:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:11:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:11:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:11:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:11:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:11:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:11:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:11:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:11:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:11:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:11:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:11:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:11:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:11:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:11:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:11:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:11:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:11:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:11:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:11:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:11:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:11:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:11:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:11:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:11:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:11:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:11:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:11:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:11:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:11:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:11:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:11:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:11:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:11:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:11:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:11:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:11:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:11:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:11:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:11:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:11:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:11:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:11:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:11:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:11:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:11:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:11:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:11:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:11:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:11:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:11:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:11:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:11:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:11:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:11:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:11:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:11:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:11:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:11:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:11:17,588 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:11:17,588 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:11:17,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:11:17 BoogieIcfgContainer [2020-08-18 16:11:17,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:11:17,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:11:17,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:11:17,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:11:17,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:11:15" (1/3) ... [2020-08-18 16:11:17,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ab9656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:11:17, skipping insertion in model container [2020-08-18 16:11:17,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:16" (2/3) ... [2020-08-18 16:11:17,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ab9656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:11:17, skipping insertion in model container [2020-08-18 16:11:17,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:11:17" (3/3) ... [2020-08-18 16:11:17,602 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-18 16:11:17,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:11:17,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:11:17,636 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:11:17,662 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:11:17,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:11:17,662 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:11:17,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:11:17,663 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:11:17,663 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:11:17,663 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:11:17,663 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:11:17,688 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-18 16:11:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:11:17,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:17,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:17,701 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:17,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:17,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-18 16:11:17,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:17,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659917859] [2020-08-18 16:11:17,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,407 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:18,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:11:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:11:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:18,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659917859] [2020-08-18 16:11:18,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:18,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:11:18,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772823324] [2020-08-18 16:11:18,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:11:18,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:18,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:11:18,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:11:18,586 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-18 16:11:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:19,838 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-18 16:11:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:11:19,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 16:11:19,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:19,857 INFO L225 Difference]: With dead ends: 324 [2020-08-18 16:11:19,858 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 16:11:19,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:11:19,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 16:11:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-18 16:11:20,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-18 16:11:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-18 16:11:20,047 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-18 16:11:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:20,048 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-18 16:11:20,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:11:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-18 16:11:20,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:11:20,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:20,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:20,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:11:20,062 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:20,063 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-18 16:11:20,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:20,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474587425] [2020-08-18 16:11:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,490 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:20,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:11:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:11:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:11:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:20,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474587425] [2020-08-18 16:11:20,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:20,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:11:20,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540830252] [2020-08-18 16:11:20,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:11:20,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:20,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:11:20,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:11:20,554 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-18 16:11:21,000 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:21,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:21,932 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-18 16:11:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:11:21,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 16:11:21,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:21,937 INFO L225 Difference]: With dead ends: 259 [2020-08-18 16:11:21,937 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 16:11:21,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:11:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 16:11:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-18 16:11:21,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-18 16:11:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-18 16:11:21,996 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-18 16:11:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:21,996 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-18 16:11:21,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:11:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-18 16:11:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 16:11:21,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:21,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:21,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:11:21,999 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:21,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-18 16:11:21,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:22,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450632389] [2020-08-18 16:11:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,322 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:22,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:11:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 16:11:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:22,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450632389] [2020-08-18 16:11:22,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:22,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:22,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232318276] [2020-08-18 16:11:22,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:22,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:22,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:22,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:22,441 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-18 16:11:22,777 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:23,113 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:23,349 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:23,577 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:24,502 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:26,249 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-18 16:11:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:11:26,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 16:11:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:26,257 INFO L225 Difference]: With dead ends: 460 [2020-08-18 16:11:26,257 INFO L226 Difference]: Without dead ends: 351 [2020-08-18 16:11:26,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:11:26,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-18 16:11:26,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-18 16:11:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-18 16:11:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-18 16:11:26,367 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-18 16:11:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:26,368 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-18 16:11:26,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:26,368 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-18 16:11:26,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 16:11:26,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:26,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:26,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:11:26,371 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:26,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:26,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-18 16:11:26,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:26,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091591705] [2020-08-18 16:11:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,689 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:11:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:11:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:11:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:11:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:11:26,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091591705] [2020-08-18 16:11:26,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:26,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:26,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265184162] [2020-08-18 16:11:26,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:26,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:26,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:26,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:26,825 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-18 16:11:27,202 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:27,980 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:28,784 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:29,104 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:29,397 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:29,659 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:30,475 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-18 16:11:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:11:30,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 16:11:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:30,481 INFO L225 Difference]: With dead ends: 747 [2020-08-18 16:11:30,482 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 16:11:30,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:11:30,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 16:11:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-18 16:11:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-18 16:11:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-18 16:11:30,578 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-18 16:11:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:30,578 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-18 16:11:30,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-18 16:11:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 16:11:30,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:30,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:30,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:11:30,582 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:30,582 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-18 16:11:30,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:30,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439420622] [2020-08-18 16:11:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,919 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 16:11:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:31,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:31,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:31,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 16:11:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:31,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:11:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:31,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439420622] [2020-08-18 16:11:31,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:31,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:31,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214651613] [2020-08-18 16:11:31,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:31,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:31,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:31,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:31,061 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-18 16:11:31,419 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:32,526 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:32,805 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:33,072 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:33,350 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:34,575 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-18 16:11:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:11:34,576 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 16:11:34,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:34,583 INFO L225 Difference]: With dead ends: 1260 [2020-08-18 16:11:34,583 INFO L226 Difference]: Without dead ends: 871 [2020-08-18 16:11:34,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:11:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-18 16:11:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-18 16:11:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-18 16:11:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-18 16:11:34,717 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-18 16:11:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:34,718 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-18 16:11:34,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-18 16:11:34,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 16:11:34,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:34,721 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:34,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:11:34,722 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:34,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:34,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-18 16:11:34,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:34,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253793253] [2020-08-18 16:11:34,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,966 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:34,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:35,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 16:11:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:35,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:35,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:35,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:35,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 16:11:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:11:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:35,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253793253] [2020-08-18 16:11:35,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:35,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:35,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134855797] [2020-08-18 16:11:35,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:35,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:35,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:35,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:35,092 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-18 16:11:36,305 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:36,564 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:11:36,831 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:37,068 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:37,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:37,871 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-18 16:11:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:11:37,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 16:11:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:37,879 INFO L225 Difference]: With dead ends: 1585 [2020-08-18 16:11:37,880 INFO L226 Difference]: Without dead ends: 870 [2020-08-18 16:11:37,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:11:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-18 16:11:38,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-18 16:11:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-18 16:11:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-18 16:11:38,036 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-18 16:11:38,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:38,036 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-18 16:11:38,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:38,037 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-18 16:11:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 16:11:38,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:38,039 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:38,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:11:38,040 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:38,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:38,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-18 16:11:38,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:38,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706411622] [2020-08-18 16:11:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,288 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:38,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 16:11:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 16:11:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:11:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:38,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706411622] [2020-08-18 16:11:38,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:38,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:11:38,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201929317] [2020-08-18 16:11:38,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:11:38,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:38,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:11:38,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:11:38,444 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-18 16:11:38,925 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:39,155 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:39,376 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:40,217 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:40,470 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:40,701 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:41,666 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-18 16:11:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:11:41,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 16:11:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:41,673 INFO L225 Difference]: With dead ends: 1442 [2020-08-18 16:11:41,673 INFO L226 Difference]: Without dead ends: 707 [2020-08-18 16:11:41,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:11:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-18 16:11:41,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-18 16:11:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-18 16:11:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-18 16:11:41,855 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-18 16:11:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:41,856 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-18 16:11:41,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:11:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-18 16:11:41,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 16:11:41,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:41,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:41,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:11:41,860 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:41,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:41,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-18 16:11:41,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:41,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512378990] [2020-08-18 16:11:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,260 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:11:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 16:11:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 16:11:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:11:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:42,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512378990] [2020-08-18 16:11:42,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:42,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:11:42,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945958655] [2020-08-18 16:11:42,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:11:42,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:42,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:11:42,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:11:42,421 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-18 16:11:42,974 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:43,712 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:44,420 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:44,771 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:45,016 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:45,301 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:45,560 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:47,388 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:47,679 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:48,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:48,102 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-18 16:11:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:11:48,103 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-18 16:11:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:48,115 INFO L225 Difference]: With dead ends: 1853 [2020-08-18 16:11:48,115 INFO L226 Difference]: Without dead ends: 1437 [2020-08-18 16:11:48,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 16:11:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-18 16:11:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-18 16:11:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-18 16:11:48,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-18 16:11:48,369 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-18 16:11:48,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:48,371 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-18 16:11:48,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:11:48,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-18 16:11:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 16:11:48,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:48,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:48,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:11:48,379 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:48,379 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-18 16:11:48,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:48,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873571511] [2020-08-18 16:11:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,758 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:11:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:11:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 16:11:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:48,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:49,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 16:11:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 16:11:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:49,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:11:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:49,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 16:11:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 16:11:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 16:11:49,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873571511] [2020-08-18 16:11:49,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:11:49,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:11:49,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153733695] [2020-08-18 16:11:49,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:11:49,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:49,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:11:49,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:11:49,158 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-18 16:11:49,968 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:11:50,484 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 16:11:50,824 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:11:51,088 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:11:51,828 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-18 16:11:52,190 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 16:11:52,531 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:11:52,924 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:11:53,262 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 16:11:54,389 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:55,331 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-18 16:11:55,843 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 16:11:56,161 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:56,737 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:57,157 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 16:11:57,803 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-18 16:11:58,384 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-18 16:11:58,934 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 16:11:59,490 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 16:12:00,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:00,337 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-18 16:12:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-18 16:12:00,338 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-18 16:12:00,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:00,348 INFO L225 Difference]: With dead ends: 2875 [2020-08-18 16:12:00,348 INFO L226 Difference]: Without dead ends: 1784 [2020-08-18 16:12:00,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-18 16:12:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-18 16:12:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-18 16:12:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-18 16:12:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-18 16:12:00,695 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-18 16:12:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:00,697 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-18 16:12:00,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:12:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-18 16:12:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-18 16:12:00,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:00,710 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:00,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:12:00,710 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:00,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:00,711 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-18 16:12:00,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:00,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918396734] [2020-08-18 16:12:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:00,990 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:00,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:12:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:12:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:12:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 16:12:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:12:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:12:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:12:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-18 16:12:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:12:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:12:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:12:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-18 16:12:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 16:12:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-18 16:12:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-18 16:12:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-18 16:12:01,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918396734] [2020-08-18 16:12:01,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:12:01,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:12:01,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132295501] [2020-08-18 16:12:01,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:12:01,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:01,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:12:01,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:12:01,425 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-18 16:12:02,910 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:03,190 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:03,426 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:03,665 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:03,905 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:04,932 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:05,465 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 16:12:05,966 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 16:12:06,336 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:08,947 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-18 16:12:08,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:12:08,948 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-18 16:12:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:08,964 INFO L225 Difference]: With dead ends: 4467 [2020-08-18 16:12:08,964 INFO L226 Difference]: Without dead ends: 2691 [2020-08-18 16:12:08,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 16:12:08,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-18 16:12:09,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-18 16:12:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-18 16:12:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-18 16:12:09,403 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-18 16:12:09,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:09,404 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-18 16:12:09,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 16:12:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-18 16:12:09,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-18 16:12:09,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:09,414 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 16:12:09,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:12:09,415 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:09,415 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-18 16:12:09,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:09,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898674502] [2020-08-18 16:12:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,744 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:12:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:12:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:12:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 16:12:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:12:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:12:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:12:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:09,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:12:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-18 16:12:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:12:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:12:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:12:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-18 16:12:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-18 16:12:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-18 16:12:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-18 16:12:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-18 16:12:10,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898674502] [2020-08-18 16:12:10,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:12:10,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:12:10,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035195439] [2020-08-18 16:12:10,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:12:10,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:10,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:12:10,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:12:10,186 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-18 16:12:10,748 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:11,090 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:12:11,357 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:11,609 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192