/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:02:36,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:02:36,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:02:36,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:02:36,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:02:36,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:02:36,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:02:36,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:02:36,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:02:36,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:02:36,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:02:36,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:02:36,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:02:36,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:02:36,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:02:36,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:02:36,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:02:36,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:02:36,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:02:36,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:02:36,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:02:36,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:02:36,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:02:36,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:02:36,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:02:36,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:02:36,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:02:36,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:02:36,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:02:36,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:02:36,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:02:36,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:02:36,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:02:36,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:02:36,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:02:36,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:02:36,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:02:36,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:02:36,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:02:36,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:02:36,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:02:36,517 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 16:02:36,542 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:02:36,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:02:36,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:02:36,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:02:36,544 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:02:36,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:02:36,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:02:36,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:02:36,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:02:36,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:02:36,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:02:36,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:02:36,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:02:36,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:02:36,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:02:36,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:02:36,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:02:36,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:02:36,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:02:36,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:02:36,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:02:36,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:02:36,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:02:36,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:02:36,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:02:36,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:02:36,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:02:36,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:02:36,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:02:36,549 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 16:02:36,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:02:36,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:02:36,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:02:36,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:02:36,888 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:02:36,890 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c [2020-08-18 16:02:36,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0ef9b8e1/32a8a5f50a4243dbb0d608c1ed3e60f6/FLAG69ab16acf [2020-08-18 16:02:37,512 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:02:37,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c [2020-08-18 16:02:37,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0ef9b8e1/32a8a5f50a4243dbb0d608c1ed3e60f6/FLAG69ab16acf [2020-08-18 16:02:37,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0ef9b8e1/32a8a5f50a4243dbb0d608c1ed3e60f6 [2020-08-18 16:02:37,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:02:37,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:02:37,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:02:37,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:02:37,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:02:37,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:02:37" (1/1) ... [2020-08-18 16:02:37,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc2875a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:37, skipping insertion in model container [2020-08-18 16:02:37,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:02:37" (1/1) ... [2020-08-18 16:02:37,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:02:37,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:02:38,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:02:38,324 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:02:38,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:02:38,508 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:02:38,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:38 WrapperNode [2020-08-18 16:02:38,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:02:38,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:02:38,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:02:38,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:02:38,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:38" (1/1) ... [2020-08-18 16:02:38,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:38" (1/1) ... [2020-08-18 16:02:38,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:38" (1/1) ... [2020-08-18 16:02:38,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:38" (1/1) ... [2020-08-18 16:02:38,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:38" (1/1) ... [2020-08-18 16:02:38,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:38" (1/1) ... [2020-08-18 16:02:38,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:38" (1/1) ... [2020-08-18 16:02:38,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:02:38,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:02:38,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:02:38,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:02:38,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:38" (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 16:02:38,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:02:38,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:02:38,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:02:38,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:02:38,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:02:38,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:02:38,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:02:38,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:02:38,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:02:38,668 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:02:38,668 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:02:38,669 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:02:38,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:02:38,669 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:02:38,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:02:38,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:02:38,670 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:02:38,670 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:02:38,670 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:02:38,671 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:02:38,671 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:02:38,671 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:02:38,672 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:02:38,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:02:38,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:02:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:02:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:02:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:02:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:02:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 16:02:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:02:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:02:38,676 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:02:38,676 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:02:38,676 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:02:38,676 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:02:38,676 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:02:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:02:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:02:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:02:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:02:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:02:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:02:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:02:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:02:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:02:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:02:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:02:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:02:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:02:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:02:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:02:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:02:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:02:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:02:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:02:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:02:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:02:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:02:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:02:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:02:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:02:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:02:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:02:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:02:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:02:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:02:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:02:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:02:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:02:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:02:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:02:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:02:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:02:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 16:02:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:02:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:02:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:02:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:02:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:02:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:02:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:02:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:02:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:02:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:02:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:02:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:02:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:02:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:02:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:02:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:02:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:02:39,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:02:39,757 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:02:39,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:02:39 BoogieIcfgContainer [2020-08-18 16:02:39,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:02:39,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:02:39,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:02:39,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:02:39,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:02:37" (1/3) ... [2020-08-18 16:02:39,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6780ba8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:02:39, skipping insertion in model container [2020-08-18 16:02:39,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:38" (2/3) ... [2020-08-18 16:02:39,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6780ba8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:02:39, skipping insertion in model container [2020-08-18 16:02:39,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:02:39" (3/3) ... [2020-08-18 16:02:39,776 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2020-08-18 16:02:39,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:02:39,796 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:02:39,811 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:02:39,831 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:02:39,831 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:02:39,832 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:02:39,832 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:02:39,832 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:02:39,832 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:02:39,832 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:02:39,832 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:02:39,852 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-08-18 16:02:39,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:02:39,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:02:39,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:02:39,864 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:02:39,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:02:39,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1542772809, now seen corresponding path program 1 times [2020-08-18 16:02:39,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:02:39,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810727643] [2020-08-18 16:02:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:02:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:40,590 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:02:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:02:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:02:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:02:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:40,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:02:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:40,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:02:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:40,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:02:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:40,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:02:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:02:40,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810727643] [2020-08-18 16:02:40,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:02:40,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:02:40,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557529923] [2020-08-18 16:02:40,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:02:40,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:02:40,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:02:40,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:02:40,739 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 3 states. [2020-08-18 16:02:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:02:41,830 INFO L93 Difference]: Finished difference Result 284 states and 371 transitions. [2020-08-18 16:02:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:02:41,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 16:02:41,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:02:41,849 INFO L225 Difference]: With dead ends: 284 [2020-08-18 16:02:41,850 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 16:02:41,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:02:41,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 16:02:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 121. [2020-08-18 16:02:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 16:02:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2020-08-18 16:02:41,951 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 46 [2020-08-18 16:02:41,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:02:41,952 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2020-08-18 16:02:41,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:02:41,952 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2020-08-18 16:02:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 16:02:41,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:02:41,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:02:41,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:02:41,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:02:41,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:02:41,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1355296267, now seen corresponding path program 1 times [2020-08-18 16:02:41,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:02:41,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315019482] [2020-08-18 16:02:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:02:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:42,307 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:02:42,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:02:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:42,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:02:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:42,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:02:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:02:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:42,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:02:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:02:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:42,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:02:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:02:42,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315019482] [2020-08-18 16:02:42,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:02:42,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:02:42,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55228910] [2020-08-18 16:02:42,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:02:42,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:02:42,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:02:42,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:02:42,380 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 4 states. [2020-08-18 16:02:42,775 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:02:43,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:02:43,535 INFO L93 Difference]: Finished difference Result 213 states and 258 transitions. [2020-08-18 16:02:43,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:02:43,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 16:02:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:02:43,539 INFO L225 Difference]: With dead ends: 213 [2020-08-18 16:02:43,539 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 16:02:43,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:02:43,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 16:02:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2020-08-18 16:02:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-18 16:02:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2020-08-18 16:02:43,576 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 47 [2020-08-18 16:02:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:02:43,577 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2020-08-18 16:02:43,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:02:43,577 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2020-08-18 16:02:43,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:02:43,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:02:43,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:02:43,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:02:43,580 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:02:43,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:02:43,580 INFO L82 PathProgramCache]: Analyzing trace with hash 604849678, now seen corresponding path program 1 times [2020-08-18 16:02:43,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:02:43,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033967239] [2020-08-18 16:02:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:02:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:43,876 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:02:43,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:02:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:43,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:02:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:43,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:02:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:43,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:02:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:02:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:43,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:02:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:43,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:02:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:02:43,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033967239] [2020-08-18 16:02:43,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:02:43,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:02:43,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341027912] [2020-08-18 16:02:43,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:02:43,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:02:43,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:02:43,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:02:43,962 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand 8 states. [2020-08-18 16:02:44,296 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:02:44,594 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:02:44,838 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:02:45,093 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:02:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:02:46,152 INFO L93 Difference]: Finished difference Result 226 states and 276 transitions. [2020-08-18 16:02:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:02:46,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 16:02:46,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:02:46,156 INFO L225 Difference]: With dead ends: 226 [2020-08-18 16:02:46,156 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 16:02:46,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:02:46,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 16:02:46,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2020-08-18 16:02:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-18 16:02:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-08-18 16:02:46,193 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 52 [2020-08-18 16:02:46,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:02:46,193 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-08-18 16:02:46,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:02:46,193 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-08-18 16:02:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:02:46,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:02:46,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:02:46,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:02:46,196 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:02:46,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:02:46,196 INFO L82 PathProgramCache]: Analyzing trace with hash 2012335283, now seen corresponding path program 1 times [2020-08-18 16:02:46,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:02:46,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019066181] [2020-08-18 16:02:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:02:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:46,478 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:02:46,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:02:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:46,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:02:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:46,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:02:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:46,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:02:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:46,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:02:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:46,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:02:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:46,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:02:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:46,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 16:02:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:46,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 16:02:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:02:46,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019066181] [2020-08-18 16:02:46,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:02:46,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:02:46,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132716098] [2020-08-18 16:02:46,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:02:46,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:02:46,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:02:46,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:02:46,558 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 6 states. [2020-08-18 16:02:46,861 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:02:48,005 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:02:48,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:02:48,557 INFO L93 Difference]: Finished difference Result 314 states and 386 transitions. [2020-08-18 16:02:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:02:48,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 16:02:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:02:48,561 INFO L225 Difference]: With dead ends: 314 [2020-08-18 16:02:48,562 INFO L226 Difference]: Without dead ends: 226 [2020-08-18 16:02:48,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:02:48,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-08-18 16:02:48,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 183. [2020-08-18 16:02:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-08-18 16:02:48,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 209 transitions. [2020-08-18 16:02:48,610 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 209 transitions. Word has length 60 [2020-08-18 16:02:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:02:48,610 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 209 transitions. [2020-08-18 16:02:48,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:02:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 209 transitions. [2020-08-18 16:02:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 16:02:48,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:02:48,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:02:48,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:02:48,614 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:02:48,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:02:48,614 INFO L82 PathProgramCache]: Analyzing trace with hash 471487289, now seen corresponding path program 1 times [2020-08-18 16:02:48,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:02:48,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070342123] [2020-08-18 16:02:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:02:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,908 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:02:48,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:02:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:02:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:02:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:02:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:02:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:02:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:02:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:02:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:02:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 16:02:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 16:02:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:02:48,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070342123] [2020-08-18 16:02:48,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:02:48,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:02:48,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425458918] [2020-08-18 16:02:48,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:02:48,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:02:48,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:02:48,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:02:48,985 INFO L87 Difference]: Start difference. First operand 183 states and 209 transitions. Second operand 8 states. [2020-08-18 16:02:49,307 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:02:50,281 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:02:50,581 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:02:51,054 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:02:51,288 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:02:51,553 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:02:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:02:52,281 INFO L93 Difference]: Finished difference Result 547 states and 678 transitions. [2020-08-18 16:02:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:02:52,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-18 16:02:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:02:52,289 INFO L225 Difference]: With dead ends: 547 [2020-08-18 16:02:52,289 INFO L226 Difference]: Without dead ends: 388 [2020-08-18 16:02:52,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:02:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-08-18 16:02:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 321. [2020-08-18 16:02:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-18 16:02:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 368 transitions. [2020-08-18 16:02:52,371 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 368 transitions. Word has length 74 [2020-08-18 16:02:52,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:02:52,372 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 368 transitions. [2020-08-18 16:02:52,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:02:52,372 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 368 transitions. [2020-08-18 16:02:52,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 16:02:52,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:02:52,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:02:52,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:02:52,375 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:02:52,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:02:52,376 INFO L82 PathProgramCache]: Analyzing trace with hash -968585995, now seen corresponding path program 1 times [2020-08-18 16:02:52,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:02:52,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237094119] [2020-08-18 16:02:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:02:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,636 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:02:52,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:02:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:02:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:02:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:02:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:02:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:02:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:02:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:02:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:02:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:02:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 16:02:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:02:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:02:52,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237094119] [2020-08-18 16:02:52,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:02:52,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:02:52,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813673337] [2020-08-18 16:02:52,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:02:52,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:02:52,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:02:52,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:02:52,759 INFO L87 Difference]: Start difference. First operand 321 states and 368 transitions. Second operand 9 states. [2020-08-18 16:02:53,089 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:02:54,179 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:02:54,457 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:02:55,369 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:02:55,623 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:02:55,852 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:02:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:02:56,063 INFO L93 Difference]: Finished difference Result 430 states and 544 transitions. [2020-08-18 16:02:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:02:56,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 16:02:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:02:56,069 INFO L225 Difference]: With dead ends: 430 [2020-08-18 16:02:56,069 INFO L226 Difference]: Without dead ends: 427 [2020-08-18 16:02:56,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:02:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-08-18 16:02:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 321. [2020-08-18 16:02:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-18 16:02:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 367 transitions. [2020-08-18 16:02:56,141 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 367 transitions. Word has length 78 [2020-08-18 16:02:56,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:02:56,141 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 367 transitions. [2020-08-18 16:02:56,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:02:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 367 transitions. [2020-08-18 16:02:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 16:02:56,144 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:02:56,144 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] [2020-08-18 16:02:56,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:02:56,145 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:02:56,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:02:56,145 INFO L82 PathProgramCache]: Analyzing trace with hash 662445521, now seen corresponding path program 1 times [2020-08-18 16:02:56,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:02:56,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272639912] [2020-08-18 16:02:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:02:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,367 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:02:56,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:02:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:02:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:02:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:02:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:02:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:02:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:02:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:02:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:02:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:02:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:02:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:02:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:02:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:02:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:02:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:56,502 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 16:02:56,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272639912] [2020-08-18 16:02:56,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:02:56,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:02:56,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332076931] [2020-08-18 16:02:56,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:02:56,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:02:56,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:02:56,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:02:56,509 INFO L87 Difference]: Start difference. First operand 321 states and 367 transitions. Second operand 9 states. [2020-08-18 16:02:57,665 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:02:57,901 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:02:58,140 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:02:58,384 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:02:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:02:59,295 INFO L93 Difference]: Finished difference Result 732 states and 917 transitions. [2020-08-18 16:02:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:02:59,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 16:02:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:02:59,299 INFO L225 Difference]: With dead ends: 732 [2020-08-18 16:02:59,300 INFO L226 Difference]: Without dead ends: 435 [2020-08-18 16:02:59,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 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 16:02:59,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-08-18 16:02:59,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 331. [2020-08-18 16:02:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-18 16:02:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 377 transitions. [2020-08-18 16:02:59,372 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 377 transitions. Word has length 94 [2020-08-18 16:02:59,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:02:59,372 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 377 transitions. [2020-08-18 16:02:59,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:02:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 377 transitions. [2020-08-18 16:02:59,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 16:02:59,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:02:59,374 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] [2020-08-18 16:02:59,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:02:59,375 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:02:59,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:02:59,375 INFO L82 PathProgramCache]: Analyzing trace with hash -234947757, now seen corresponding path program 1 times [2020-08-18 16:02:59,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:02:59,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342935544] [2020-08-18 16:02:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:02:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,620 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:02:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:02:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:02:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:02:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:02:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:02:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:02:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:02:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:02:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:02:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:02:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:02:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:02:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:02:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:02:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:02:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:02:59,782 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 16:02:59,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342935544] [2020-08-18 16:02:59,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:02:59,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:02:59,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911627075] [2020-08-18 16:02:59,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:02:59,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:02:59,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:02:59,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:02:59,788 INFO L87 Difference]: Start difference. First operand 331 states and 377 transitions. Second operand 11 states. [2020-08-18 16:03:00,219 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:00,468 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:00,707 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:01,368 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:01,619 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:01,851 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:02,935 INFO L93 Difference]: Finished difference Result 752 states and 939 transitions. [2020-08-18 16:03:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:03:02,937 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-18 16:03:02,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:02,940 INFO L225 Difference]: With dead ends: 752 [2020-08-18 16:03:02,941 INFO L226 Difference]: Without dead ends: 445 [2020-08-18 16:03:02,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:03:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-08-18 16:03:03,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 339. [2020-08-18 16:03:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-08-18 16:03:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 385 transitions. [2020-08-18 16:03:03,025 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 385 transitions. Word has length 94 [2020-08-18 16:03:03,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:03,026 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 385 transitions. [2020-08-18 16:03:03,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:03:03,026 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 385 transitions. [2020-08-18 16:03:03,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 16:03:03,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:03,028 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] [2020-08-18 16:03:03,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:03:03,028 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:03,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1735991700, now seen corresponding path program 1 times [2020-08-18 16:03:03,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:03,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464856334] [2020-08-18 16:03:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,283 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:03,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:03:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:03:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:03:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:03:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:03:03,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464856334] [2020-08-18 16:03:03,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:03,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:03:03,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528732292] [2020-08-18 16:03:03,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:03:03,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:03,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:03:03,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:03:03,432 INFO L87 Difference]: Start difference. First operand 339 states and 385 transitions. Second operand 7 states. [2020-08-18 16:03:03,778 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:04,284 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:06,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:06,253 INFO L93 Difference]: Finished difference Result 1074 states and 1381 transitions. [2020-08-18 16:03:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:03:06,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-08-18 16:03:06,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:06,260 INFO L225 Difference]: With dead ends: 1074 [2020-08-18 16:03:06,260 INFO L226 Difference]: Without dead ends: 759 [2020-08-18 16:03:06,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:03:06,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-08-18 16:03:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 639. [2020-08-18 16:03:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-08-18 16:03:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 751 transitions. [2020-08-18 16:03:06,425 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 751 transitions. Word has length 94 [2020-08-18 16:03:06,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:06,427 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 751 transitions. [2020-08-18 16:03:06,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:03:06,427 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 751 transitions. [2020-08-18 16:03:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 16:03:06,432 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:06,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:06,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:03:06,433 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:06,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:06,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1966005102, now seen corresponding path program 1 times [2020-08-18 16:03:06,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:06,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045792409] [2020-08-18 16:03:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,732 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:06,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:03:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:03:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:03:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:07,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:07,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:03:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:03:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:03:07,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045792409] [2020-08-18 16:03:07,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:03:07,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 16:03:07,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662932611] [2020-08-18 16:03:07,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 16:03:07,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:07,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 16:03:07,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 16:03:07,060 INFO L87 Difference]: Start difference. First operand 639 states and 751 transitions. Second operand 17 states. [2020-08-18 16:03:07,694 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:08,046 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:08,313 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:08,560 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:09,209 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:10,201 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:10,561 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:10,844 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:11,088 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:11,438 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:11,723 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:12,284 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 16:03:12,838 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 16:03:14,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:14,480 INFO L93 Difference]: Finished difference Result 1339 states and 1649 transitions. [2020-08-18 16:03:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 16:03:14,480 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-08-18 16:03:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:14,486 INFO L225 Difference]: With dead ends: 1339 [2020-08-18 16:03:14,486 INFO L226 Difference]: Without dead ends: 724 [2020-08-18 16:03:14,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=315, Invalid=1245, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 16:03:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-08-18 16:03:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 607. [2020-08-18 16:03:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-08-18 16:03:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 700 transitions. [2020-08-18 16:03:14,584 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 700 transitions. Word has length 98 [2020-08-18 16:03:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:14,585 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 700 transitions. [2020-08-18 16:03:14,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 16:03:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 700 transitions. [2020-08-18 16:03:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 16:03:14,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:14,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:14,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:03:14,588 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:14,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:14,588 INFO L82 PathProgramCache]: Analyzing trace with hash 451842310, now seen corresponding path program 1 times [2020-08-18 16:03:14,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:14,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271373035] [2020-08-18 16:03:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:03:14,648 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:03:14,648 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:03:14,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:03:14,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:03:14 BoogieIcfgContainer [2020-08-18 16:03:14,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:03:14,682 INFO L168 Benchmark]: Toolchain (without parser) took 36869.78 ms. Allocated memory was 138.4 MB in the beginning and 706.7 MB in the end (delta: 568.3 MB). Free memory was 100.2 MB in the beginning and 210.3 MB in the end (delta: -110.1 MB). Peak memory consumption was 458.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:03:14,683 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:03:14,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.27 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.0 MB in the beginning and 168.0 MB in the end (delta: -68.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:03:14,684 INFO L168 Benchmark]: Boogie Preprocessor took 96.54 ms. Allocated memory is still 200.8 MB. Free memory was 168.0 MB in the beginning and 163.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:03:14,685 INFO L168 Benchmark]: RCFGBuilder took 1160.30 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 163.2 MB in the beginning and 193.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:03:14,685 INFO L168 Benchmark]: TraceAbstraction took 34911.83 ms. Allocated memory was 231.7 MB in the beginning and 706.7 MB in the end (delta: 475.0 MB). Free memory was 193.9 MB in the beginning and 210.3 MB in the end (delta: -16.4 MB). Peak memory consumption was 458.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:03:14,688 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 695.27 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.0 MB in the beginning and 168.0 MB in the end (delta: -68.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.54 ms. Allocated memory is still 200.8 MB. Free memory was 168.0 MB in the beginning and 163.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1160.30 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 163.2 MB in the beginning and 193.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34911.83 ms. Allocated memory was 231.7 MB in the beginning and 706.7 MB in the end (delta: 475.0 MB). Free memory was 193.9 MB in the beginning and 210.3 MB in the end (delta: -16.4 MB). Peak memory consumption was 458.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 764]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L581] int pumpRunning = 0; [L582] int systemActive = 1; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L824] int retValue_acc ; [L827] retValue_acc = 1 [L828] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L511] int splverifierCounter ; [L512] int tmp ; [L513] int tmp___0 ; [L514] int tmp___1 ; [L515] int tmp___2 ; [L518] splverifierCounter = 0 [L520] COND TRUE 1 [L522] COND TRUE splverifierCounter < 4 [L528] tmp = __VERIFIER_nondet_int() [L530] COND TRUE \read(tmp) [L532] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L532] RET waterRise() [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp___0)) [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___2)) [L556] tmp___1 = __VERIFIER_nondet_int() [L558] COND TRUE \read(tmp___1) [L565] CALL timeShift() [L589] COND FALSE !(\read(pumpRunning)) [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L618] int tmp ; [L621] COND TRUE ! pumpRunning [L623] CALL, EXPR isHighWaterLevel() [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L739] CALL, EXPR isHighWaterSensorDry() [L493] int retValue_acc ; [L496] COND FALSE !(waterLevel < 2) [L500] retValue_acc = 0 [L501] return (retValue_acc); [L739] RET, EXPR isHighWaterSensorDry() [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); [L623] RET, EXPR isHighWaterLevel() [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) [L627] CALL activatePump() [L652] int tmp ; [L656] CALL, EXPR isMethaneAlarm() [L677] int retValue_acc ; [L681] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); [L656] RET, EXPR isMethaneAlarm() [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L662] CALL activatePump__wrappee__highWaterSensor() [L646] pumpRunning = 1 [L662] RET activatePump__wrappee__highWaterSensor() [L627] RET activatePump() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L770] int tmp ; [L771] int tmp___0 ; [L775] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L775] RET, EXPR isMethaneLevelCritical() [L775] tmp = isMethaneLevelCritical() [L777] COND FALSE !(\read(tmp)) [L604] RET __utac_acc__Specification1_spec__1() [L565] RET timeShift() [L520] COND TRUE 1 [L522] COND TRUE splverifierCounter < 4 [L528] tmp = __VERIFIER_nondet_int() [L530] COND FALSE !(\read(tmp)) [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp___0) [L542] CALL changeMethaneLevel() [L443] COND FALSE !(\read(methaneLevelCritical)) [L446] methaneLevelCritical = 1 [L542] RET changeMethaneLevel() [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___2)) [L556] tmp___1 = __VERIFIER_nondet_int() [L558] COND TRUE \read(tmp___1) [L565] CALL timeShift() [L589] COND TRUE \read(pumpRunning) [L591] CALL lowerWaterLevel() [L419] COND TRUE waterLevel > 0 [L420] waterLevel = waterLevel - 1 [L591] RET lowerWaterLevel() [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L618] int tmp ; [L621] COND FALSE !(! pumpRunning) [L636] FCALL processEnvironment__wrappee__base() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L770] int tmp ; [L771] int tmp___0 ; [L775] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L775] RET, EXPR isMethaneLevelCritical() [L775] tmp = isMethaneLevelCritical() [L777] COND TRUE \read(tmp) [L779] CALL, EXPR isPumpRunning() [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); [L779] RET, EXPR isPumpRunning() [L779] tmp___0 = isPumpRunning() [L781] COND TRUE \read(tmp___0) [L783] CALL __automaton_fail() [L764] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.8s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 29.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1191 SDtfs, 2362 SDslu, 1385 SDs, 0 SdLazy, 6739 SolverSat, 1616 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 398 GetRequests, 263 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=639occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 748 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 871 NumberOfCodeBlocks, 871 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 727 ConstructedInterpolants, 0 QuantifiedInterpolants, 233536 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...