/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_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:12:14,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:12:14,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:12:14,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:12:14,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:12:14,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:12:14,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:12:14,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:12:14,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:12:14,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:12:14,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:12:14,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:12:14,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:12:14,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:12:14,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:12:14,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:12:14,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:12:14,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:12:14,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:12:14,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:12:14,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:12:14,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:12:14,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:12:14,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:12:14,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:12:14,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:12:14,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:12:14,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:12:14,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:12:14,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:12:14,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:12:14,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:12:14,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:12:14,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:12:14,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:12:14,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:12:14,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:12:14,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:12:14,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:12:14,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:12:14,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:12:14,356 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 16:12:14,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:12:14,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:12:14,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:12:14,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:12:14,410 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:12:14,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:12:14,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:12:14,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:12:14,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:12:14,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:12:14,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:12:14,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:12:14,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:12:14,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:12:14,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:12:14,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:12:14,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:12:14,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:12:14,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:12:14,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:12:14,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:12:14,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:12:14,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:12:14,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:12:14,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:12:14,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:12:14,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:12:14,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:12:14,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:12:14,419 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 16:12:14,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:12:14,761 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:12:14,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:12:14,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:12:14,768 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:12:14,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-18 16:12:14,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a47cde79e/848ff609bcd744e3820770b5ab81ed2e/FLAG367643ceb [2020-08-18 16:12:15,368 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:12:15,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-18 16:12:15,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a47cde79e/848ff609bcd744e3820770b5ab81ed2e/FLAG367643ceb [2020-08-18 16:12:15,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a47cde79e/848ff609bcd744e3820770b5ab81ed2e [2020-08-18 16:12:15,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:12:15,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:12:15,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:12:15,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:12:15,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:12:15,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:12:15" (1/1) ... [2020-08-18 16:12:15,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73af11df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:15, skipping insertion in model container [2020-08-18 16:12:15,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:12:15" (1/1) ... [2020-08-18 16:12:15,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:12:15,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:12:16,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:12:16,167 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:12:16,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:12:16,367 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:12:16,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16 WrapperNode [2020-08-18 16:12:16,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:12:16,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:12:16,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:12:16,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:12:16,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16" (1/1) ... [2020-08-18 16:12:16,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16" (1/1) ... [2020-08-18 16:12:16,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16" (1/1) ... [2020-08-18 16:12:16,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16" (1/1) ... [2020-08-18 16:12:16,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16" (1/1) ... [2020-08-18 16:12:16,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16" (1/1) ... [2020-08-18 16:12:16,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16" (1/1) ... [2020-08-18 16:12:16,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:12:16,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:12:16,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:12:16,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:12:16,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16" (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 16:12:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:12:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:12:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:12:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:12:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:12:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:12:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:12:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:12:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:12:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:12:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:12:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:12:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:12:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:12:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:12:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:12:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:12:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:12:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:12:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:12:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:12:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:12:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:12:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:12:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:12:16,546 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:12:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:12:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:12:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:12:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:12:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:12:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 16:12:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:12:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:12:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:12:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:12:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:12:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:12:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:12:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:12:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:12:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:12:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:12:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:12:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:12:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:12:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:12:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:12:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:12:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:12:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:12:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:12:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:12:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:12:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:12:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:12:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:12:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:12:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:12:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:12:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:12:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:12:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:12:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:12:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:12:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:12:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:12:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:12:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:12:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:12:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:12:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:12:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:12:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:12:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:12:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:12:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:12:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:12:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:12:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:12:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:12:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:12:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:12:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:12:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:12:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:12:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:12:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:12:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:12:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:12:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:12:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:12:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:12:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:12:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:12:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:12:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:12:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 16:12:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:12:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:12:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:12:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:12:17,771 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:12:17,771 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:12:17,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:12:17 BoogieIcfgContainer [2020-08-18 16:12:17,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:12:17,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:12:17,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:12:17,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:12:17,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:12:15" (1/3) ... [2020-08-18 16:12:17,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267e70b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:12:17, skipping insertion in model container [2020-08-18 16:12:17,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16" (2/3) ... [2020-08-18 16:12:17,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267e70b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:12:17, skipping insertion in model container [2020-08-18 16:12:17,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:12:17" (3/3) ... [2020-08-18 16:12:17,796 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2020-08-18 16:12:17,807 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:12:17,819 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:12:17,836 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:12:17,869 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:12:17,870 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:12:17,870 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:12:17,870 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:12:17,870 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:12:17,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:12:17,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:12:17,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:12:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2020-08-18 16:12:17,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:12:17,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:17,921 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 16:12:17,921 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:17,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:17,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1039510468, now seen corresponding path program 1 times [2020-08-18 16:12:17,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:17,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324981004] [2020-08-18 16:12:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,700 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:18,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:12:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:12:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:18,800 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 16:12:18,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324981004] [2020-08-18 16:12:18,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:18,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:12:18,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080322747] [2020-08-18 16:12:18,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:12:18,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:18,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:12:18,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:12:18,830 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2020-08-18 16:12:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:20,092 INFO L93 Difference]: Finished difference Result 356 states and 457 transitions. [2020-08-18 16:12:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:12:20,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 16:12:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:20,110 INFO L225 Difference]: With dead ends: 356 [2020-08-18 16:12:20,110 INFO L226 Difference]: Without dead ends: 195 [2020-08-18 16:12:20,116 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 16:12:20,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-18 16:12:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 162. [2020-08-18 16:12:20,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-18 16:12:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2020-08-18 16:12:20,248 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 59 [2020-08-18 16:12:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:20,248 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2020-08-18 16:12:20,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:12:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2020-08-18 16:12:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:12:20,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:20,254 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 16:12:20,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:12:20,254 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:20,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:20,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1700142027, now seen corresponding path program 1 times [2020-08-18 16:12:20,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:20,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254324141] [2020-08-18 16:12:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,566 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:12:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:12:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:12:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:20,621 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 16:12:20,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254324141] [2020-08-18 16:12:20,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:20,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:12:20,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960287225] [2020-08-18 16:12:20,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:12:20,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:20,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:12:20,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:12:20,625 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand 5 states. [2020-08-18 16:12:21,081 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:22,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:22,174 INFO L93 Difference]: Finished difference Result 295 states and 361 transitions. [2020-08-18 16:12:22,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:12:22,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 16:12:22,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:22,178 INFO L225 Difference]: With dead ends: 295 [2020-08-18 16:12:22,178 INFO L226 Difference]: Without dead ends: 185 [2020-08-18 16:12:22,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:12:22,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-18 16:12:22,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-08-18 16:12:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 16:12:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2020-08-18 16:12:22,223 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 60 [2020-08-18 16:12:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:22,224 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2020-08-18 16:12:22,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:12:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2020-08-18 16:12:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:12:22,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:22,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:22,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:12:22,228 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:22,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1740397712, now seen corresponding path program 1 times [2020-08-18 16:12:22,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:22,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241769731] [2020-08-18 16:12:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,549 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:22,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:12:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:12:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:22,700 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 16:12:22,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241769731] [2020-08-18 16:12:22,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:22,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:12:22,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369916741] [2020-08-18 16:12:22,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:12:22,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:22,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:12:22,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:12:22,703 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 9 states. [2020-08-18 16:12:23,068 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:23,373 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:23,621 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:23,880 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:24,720 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:26,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:26,766 INFO L93 Difference]: Finished difference Result 508 states and 630 transitions. [2020-08-18 16:12:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:12:26,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 16:12:26,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:26,773 INFO L225 Difference]: With dead ends: 508 [2020-08-18 16:12:26,773 INFO L226 Difference]: Without dead ends: 383 [2020-08-18 16:12:26,774 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 16:12:26,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-18 16:12:26,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 326. [2020-08-18 16:12:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-18 16:12:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2020-08-18 16:12:26,865 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 64 [2020-08-18 16:12:26,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:26,866 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2020-08-18 16:12:26,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:12:26,866 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2020-08-18 16:12:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 16:12:26,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:26,870 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 16:12:26,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:12:26,870 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:26,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:26,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1889366184, now seen corresponding path program 1 times [2020-08-18 16:12:26,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:26,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112844917] [2020-08-18 16:12:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,194 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:27,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:12:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:12:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:12:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,303 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 16:12:27,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112844917] [2020-08-18 16:12:27,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:27,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:12:27,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235116631] [2020-08-18 16:12:27,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:12:27,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:27,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:12:27,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:12:27,306 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand 9 states. [2020-08-18 16:12:27,651 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:28,258 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:29,143 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:29,463 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:29,774 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:30,027 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:30,918 INFO L93 Difference]: Finished difference Result 827 states and 1076 transitions. [2020-08-18 16:12:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:12:30,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 16:12:30,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:30,927 INFO L225 Difference]: With dead ends: 827 [2020-08-18 16:12:30,927 INFO L226 Difference]: Without dead ends: 529 [2020-08-18 16:12:30,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:12:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-18 16:12:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 465. [2020-08-18 16:12:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-08-18 16:12:31,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 561 transitions. [2020-08-18 16:12:31,024 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 561 transitions. Word has length 70 [2020-08-18 16:12:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:31,024 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 561 transitions. [2020-08-18 16:12:31,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:12:31,025 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 561 transitions. [2020-08-18 16:12:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 16:12:31,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:31,028 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 16:12:31,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:12:31,029 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:31,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:31,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1315837753, now seen corresponding path program 1 times [2020-08-18 16:12:31,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:31,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546129783] [2020-08-18 16:12:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,288 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:31,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:12:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 16:12:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:12:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,465 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 16:12:31,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546129783] [2020-08-18 16:12:31,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:31,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:12:31,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775300909] [2020-08-18 16:12:31,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:12:31,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:31,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:12:31,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:12:31,469 INFO L87 Difference]: Start difference. First operand 465 states and 561 transitions. Second operand 9 states. [2020-08-18 16:12:32,577 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:32,840 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:33,097 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:33,329 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:34,231 INFO L93 Difference]: Finished difference Result 988 states and 1255 transitions. [2020-08-18 16:12:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:12:34,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-18 16:12:34,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:34,237 INFO L225 Difference]: With dead ends: 988 [2020-08-18 16:12:34,237 INFO L226 Difference]: Without dead ends: 551 [2020-08-18 16:12:34,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:12:34,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-08-18 16:12:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 478. [2020-08-18 16:12:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-18 16:12:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 575 transitions. [2020-08-18 16:12:34,311 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 575 transitions. Word has length 97 [2020-08-18 16:12:34,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:34,312 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 575 transitions. [2020-08-18 16:12:34,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:12:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 575 transitions. [2020-08-18 16:12:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 16:12:34,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:34,315 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 16:12:34,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:12:34,315 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:34,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1243451195, now seen corresponding path program 1 times [2020-08-18 16:12:34,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:34,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050874048] [2020-08-18 16:12:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,614 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:34,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:12:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 16:12:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:12:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:34,794 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 16:12:34,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050874048] [2020-08-18 16:12:34,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:34,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:12:34,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708927919] [2020-08-18 16:12:34,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:12:34,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:34,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:12:34,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:12:34,797 INFO L87 Difference]: Start difference. First operand 478 states and 575 transitions. Second operand 11 states. [2020-08-18 16:12:35,238 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:35,489 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:35,711 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:36,512 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:36,783 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:37,048 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:38,019 INFO L93 Difference]: Finished difference Result 1015 states and 1308 transitions. [2020-08-18 16:12:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:12:38,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-18 16:12:38,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:38,026 INFO L225 Difference]: With dead ends: 1015 [2020-08-18 16:12:38,026 INFO L226 Difference]: Without dead ends: 565 [2020-08-18 16:12:38,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:12:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-08-18 16:12:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 486. [2020-08-18 16:12:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-18 16:12:38,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2020-08-18 16:12:38,120 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 97 [2020-08-18 16:12:38,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:38,123 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2020-08-18 16:12:38,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:12:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2020-08-18 16:12:38,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 16:12:38,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:38,129 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 16:12:38,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:12:38,131 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:38,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:38,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1573216956, now seen corresponding path program 1 times [2020-08-18 16:12:38,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:38,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778413968] [2020-08-18 16:12:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,425 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:38,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:12:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 16:12:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:12:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:38,614 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 16:12:38,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778413968] [2020-08-18 16:12:38,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:38,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:12:38,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413444084] [2020-08-18 16:12:38,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:12:38,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:38,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:12:38,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:12:38,622 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 7 states. [2020-08-18 16:12:38,947 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:39,468 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:41,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:41,788 INFO L93 Difference]: Finished difference Result 1503 states and 1948 transitions. [2020-08-18 16:12:41,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:12:41,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-18 16:12:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:41,796 INFO L225 Difference]: With dead ends: 1503 [2020-08-18 16:12:41,796 INFO L226 Difference]: Without dead ends: 1045 [2020-08-18 16:12:41,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:12:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-08-18 16:12:41,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 971. [2020-08-18 16:12:41,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-08-18 16:12:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1183 transitions. [2020-08-18 16:12:41,977 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1183 transitions. Word has length 97 [2020-08-18 16:12:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:41,978 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1183 transitions. [2020-08-18 16:12:41,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:12:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1183 transitions. [2020-08-18 16:12:41,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-18 16:12:41,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:41,983 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:41,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:12:41,983 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:41,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:41,983 INFO L82 PathProgramCache]: Analyzing trace with hash 164101122, now seen corresponding path program 1 times [2020-08-18 16:12:41,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:41,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605984914] [2020-08-18 16:12:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,328 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:12:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:12:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:12:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:12:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,531 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 16:12:42,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605984914] [2020-08-18 16:12:42,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:42,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:12:42,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898583213] [2020-08-18 16:12:42,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:12:42,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:42,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:12:42,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:12:42,534 INFO L87 Difference]: Start difference. First operand 971 states and 1183 transitions. Second operand 12 states. [2020-08-18 16:12:43,049 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:43,787 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:44,449 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:44,765 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:45,003 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:45,302 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:45,576 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:47,671 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:47,997 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:48,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:48,667 INFO L93 Difference]: Finished difference Result 2749 states and 3568 transitions. [2020-08-18 16:12:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:12:48,668 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-18 16:12:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:48,681 INFO L225 Difference]: With dead ends: 2749 [2020-08-18 16:12:48,681 INFO L226 Difference]: Without dead ends: 2004 [2020-08-18 16:12:48,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 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 16:12:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-08-18 16:12:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1704. [2020-08-18 16:12:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-08-18 16:12:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2058 transitions. [2020-08-18 16:12:48,985 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2058 transitions. Word has length 101 [2020-08-18 16:12:48,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:48,990 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2058 transitions. [2020-08-18 16:12:48,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:12:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2058 transitions. [2020-08-18 16:12:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-18 16:12:48,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:48,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:48,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:12:48,996 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:48,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:48,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1947078735, now seen corresponding path program 1 times [2020-08-18 16:12:48,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:48,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025560926] [2020-08-18 16:12:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,472 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:49,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:12:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:12:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:12:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 16:12:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:12:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 16:12:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:12:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:12:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 16:12:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-18 16:12:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 16:12:49,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025560926] [2020-08-18 16:12:49,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:12:49,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:12:49,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645862108] [2020-08-18 16:12:49,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:12:49,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:49,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:12:49,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:12:49,908 INFO L87 Difference]: Start difference. First operand 1704 states and 2058 transitions. Second operand 16 states. [2020-08-18 16:12:50,652 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:50,987 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:12:51,247 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:12:51,500 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:12:52,157 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 16:12:52,393 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:52,728 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:12:53,167 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:12:54,275 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:54,850 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:55,350 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 16:12:55,702 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:56,255 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:56,681 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:57,251 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 16:12:57,690 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:58,441 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 16:12:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:59,106 INFO L93 Difference]: Finished difference Result 3639 states and 4528 transitions. [2020-08-18 16:12:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-18 16:12:59,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-18 16:12:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:59,119 INFO L225 Difference]: With dead ends: 3639 [2020-08-18 16:12:59,120 INFO L226 Difference]: Without dead ends: 2149 [2020-08-18 16:12:59,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=682, Invalid=2740, Unknown=0, NotChecked=0, Total=3422 [2020-08-18 16:12:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2020-08-18 16:12:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1971. [2020-08-18 16:12:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-08-18 16:12:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2328 transitions. [2020-08-18 16:12:59,617 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2328 transitions. Word has length 178 [2020-08-18 16:12:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:59,618 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 2328 transitions. [2020-08-18 16:12:59,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:12:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2328 transitions. [2020-08-18 16:12:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-08-18 16:12:59,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:59,627 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:59,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:12:59,628 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:59,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1357647421, now seen corresponding path program 1 times [2020-08-18 16:12:59,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:59,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135319966] [2020-08-18 16:12:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:59,974 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:59,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:59,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:59,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:59,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:59,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:13:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:13:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:13:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:13:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 16:13:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:13:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 16:13:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 16:13:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:13:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:13:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-18 16:13:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 16:13:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-18 16:13:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-18 16:13:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-08-18 16:13:00,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135319966] [2020-08-18 16:13:00,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:13:00,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:13:00,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516404318] [2020-08-18 16:13:00,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:13:00,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:13:00,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:13:00,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:13:00,397 INFO L87 Difference]: Start difference. First operand 1971 states and 2328 transitions. Second operand 15 states. [2020-08-18 16:13:01,652 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:13:01,921 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:02,211 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:02,450 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:13:02,689 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:13:03,824 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:04,337 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 16:13:04,800 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 16:13:05,115 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:13:08,217 INFO L93 Difference]: Finished difference Result 5414 states and 6621 transitions. [2020-08-18 16:13:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:13:08,218 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 297 [2020-08-18 16:13:08,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:13:08,236 INFO L225 Difference]: With dead ends: 5414 [2020-08-18 16:13:08,236 INFO L226 Difference]: Without dead ends: 3267 [2020-08-18 16:13:08,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 116 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 16:13:08,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2020-08-18 16:13:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2803. [2020-08-18 16:13:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2803 states. [2020-08-18 16:13:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3345 transitions. [2020-08-18 16:13:08,826 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3345 transitions. Word has length 297 [2020-08-18 16:13:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:13:08,827 INFO L479 AbstractCegarLoop]: Abstraction has 2803 states and 3345 transitions. [2020-08-18 16:13:08,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 16:13:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3345 transitions. [2020-08-18 16:13:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-18 16:13:08,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:08,839 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:13:08,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:13:08,839 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:08,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1075598306, now seen corresponding path program 1 times [2020-08-18 16:13:08,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:08,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479615180] [2020-08-18 16:13:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,249 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:13:09,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:13:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:13:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:13:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:13:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:13:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:13:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 16:13:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:13:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 16:13:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:13:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-18 16:13:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:13:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:13:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 16:13:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 16:13:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-18 16:13:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-18 16:13:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 16:13:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 86 proven. 42 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-08-18 16:13:09,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479615180] [2020-08-18 16:13:09,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:13:09,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:13:09,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67664664] [2020-08-18 16:13:09,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:13:09,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:13:09,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:13:09,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:13:09,915 INFO L87 Difference]: Start difference. First operand 2803 states and 3345 transitions. Second operand 16 states. [2020-08-18 16:13:10,387 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:13:10,730 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:11,006 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:11,258 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:11,892 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191