/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:41:15,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:41:15,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:41:15,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:41:15,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:41:15,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:41:15,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:41:15,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:41:15,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:41:15,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:41:15,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:41:15,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:41:15,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:41:15,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:41:15,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:41:15,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:41:15,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:41:15,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:41:15,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:41:15,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:41:15,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:41:15,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:41:15,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:41:15,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:41:15,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:41:15,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:41:15,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:41:15,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:41:15,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:41:15,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:41:15,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:41:15,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:41:15,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:41:15,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:41:15,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:41:15,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:41:15,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:41:15,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:41:15,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:41:15,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:41:15,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:41:15,521 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 17:41:15,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:41:15,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:41:15,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:41:15,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:41:15,545 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:41:15,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:41:15,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:41:15,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:41:15,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:41:15,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:41:15,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:41:15,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:41:15,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:41:15,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:41:15,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:41:15,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:41:15,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:41:15,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:41:15,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:41:15,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:41:15,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:41:15,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:41:15,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:41:15,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:41:15,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:41:15,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:41:15,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:41:15,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:41:15,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:41:15,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:41:15,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:41:15,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:41:15,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:41:15,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:41:15,887 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:41:15,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-08-18 17:41:15,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9ea2ea12/b74aee8f12034936b8baf4b0e0529605/FLAG6b4638843 [2020-08-18 17:41:16,436 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:41:16,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-08-18 17:41:16,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9ea2ea12/b74aee8f12034936b8baf4b0e0529605/FLAG6b4638843 [2020-08-18 17:41:16,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9ea2ea12/b74aee8f12034936b8baf4b0e0529605 [2020-08-18 17:41:16,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:41:16,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:41:16,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:41:16,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:41:16,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:41:16,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:41:16" (1/1) ... [2020-08-18 17:41:16,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1208f7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16, skipping insertion in model container [2020-08-18 17:41:16,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:41:16" (1/1) ... [2020-08-18 17:41:16,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:41:16,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:41:17,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:41:17,226 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:41:17,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:41:17,383 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:41:17,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:17 WrapperNode [2020-08-18 17:41:17,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:41:17,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:41:17,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:41:17,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:41:17,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:17" (1/1) ... [2020-08-18 17:41:17,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:17" (1/1) ... [2020-08-18 17:41:17,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:17" (1/1) ... [2020-08-18 17:41:17,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:17" (1/1) ... [2020-08-18 17:41:17,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:17" (1/1) ... [2020-08-18 17:41:17,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:17" (1/1) ... [2020-08-18 17:41:17,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:17" (1/1) ... [2020-08-18 17:41:17,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:41:17,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:41:17,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:41:17,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:41:17,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:17" (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 17:41:17,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:41:17,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:41:17,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 17:41:17,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 17:41:17,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 17:41:17,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 17:41:17,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 17:41:17,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 17:41:17,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 17:41:17,541 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 17:41:17,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 17:41:17,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 17:41:17,543 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 17:41:17,543 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 17:41:17,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 17:41:17,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 17:41:17,545 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 17:41:17,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 17:41:17,545 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 17:41:17,545 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 17:41:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 17:41:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 17:41:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 17:41:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 17:41:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 17:41:17,548 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 17:41:17,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 17:41:17,549 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 17:41:17,549 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 17:41:17,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 17:41:17,549 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 17:41:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:41:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 17:41:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 17:41:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 17:41:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 17:41:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 17:41:17,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 17:41:17,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 17:41:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:41:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:41:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 17:41:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 17:41:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:41:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:41:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 17:41:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:41:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:41:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:41:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:41:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 17:41:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:41:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 17:41:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 17:41:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:41:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 17:41:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 17:41:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:41:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 17:41:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 17:41:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 17:41:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 17:41:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 17:41:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 17:41:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 17:41:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 17:41:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 17:41:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 17:41:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 17:41:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 17:41:17,557 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 17:41:17,557 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 17:41:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 17:41:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 17:41:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 17:41:17,559 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 17:41:17,559 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 17:41:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 17:41:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 17:41:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 17:41:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 17:41:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 17:41:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 17:41:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 17:41:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 17:41:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 17:41:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 17:41:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:41:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 17:41:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:41:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:41:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:41:18,631 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:41:18,631 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 17:41:18,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:41:18 BoogieIcfgContainer [2020-08-18 17:41:18,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:41:18,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:41:18,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:41:18,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:41:18,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:41:16" (1/3) ... [2020-08-18 17:41:18,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f3085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:41:18, skipping insertion in model container [2020-08-18 17:41:18,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:17" (2/3) ... [2020-08-18 17:41:18,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f3085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:41:18, skipping insertion in model container [2020-08-18 17:41:18,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:41:18" (3/3) ... [2020-08-18 17:41:18,652 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product35.cil.c [2020-08-18 17:41:18,663 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:41:18,673 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:41:18,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:41:18,721 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:41:18,722 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:41:18,722 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:41:18,722 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:41:18,722 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:41:18,722 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:41:18,722 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:41:18,723 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:41:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-18 17:41:18,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 17:41:18,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:18,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:41:18,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:18,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:18,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1759491915, now seen corresponding path program 1 times [2020-08-18 17:41:18,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:18,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679124487] [2020-08-18 17:41:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:19,534 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:19,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:19,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:19,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:19,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:41:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:19,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:41:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:19,692 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 17:41:19,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679124487] [2020-08-18 17:41:19,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:19,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:41:19,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482537905] [2020-08-18 17:41:19,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:41:19,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:41:19,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:41:19,722 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-18 17:41:20,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:20,695 INFO L93 Difference]: Finished difference Result 269 states and 353 transitions. [2020-08-18 17:41:20,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:41:20,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 17:41:20,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:20,712 INFO L225 Difference]: With dead ends: 269 [2020-08-18 17:41:20,712 INFO L226 Difference]: Without dead ends: 151 [2020-08-18 17:41:20,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:41:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-18 17:41:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 119. [2020-08-18 17:41:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 17:41:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-18 17:41:20,806 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 51 [2020-08-18 17:41:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:20,807 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-18 17:41:20,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:41:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-18 17:41:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 17:41:20,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:20,810 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 17:41:20,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:41:20,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:20,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:20,811 INFO L82 PathProgramCache]: Analyzing trace with hash -273292015, now seen corresponding path program 1 times [2020-08-18 17:41:20,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:20,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907382422] [2020-08-18 17:41:20,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:21,135 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:21,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:21,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:21,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:21,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:21,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:21,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:41:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:41:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:21,194 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 17:41:21,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907382422] [2020-08-18 17:41:21,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:21,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:41:21,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110683066] [2020-08-18 17:41:21,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:41:21,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:21,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:41:21,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:41:21,200 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 5 states. [2020-08-18 17:41:21,653 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:22,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:22,460 INFO L93 Difference]: Finished difference Result 205 states and 254 transitions. [2020-08-18 17:41:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:41:22,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 17:41:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:22,465 INFO L225 Difference]: With dead ends: 205 [2020-08-18 17:41:22,465 INFO L226 Difference]: Without dead ends: 141 [2020-08-18 17:41:22,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:41:22,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-18 17:41:22,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 110. [2020-08-18 17:41:22,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-18 17:41:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-08-18 17:41:22,504 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 52 [2020-08-18 17:41:22,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:22,504 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-08-18 17:41:22,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:41:22,504 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-08-18 17:41:22,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 17:41:22,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:22,507 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] [2020-08-18 17:41:22,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:41:22,507 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:22,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1232114680, now seen corresponding path program 1 times [2020-08-18 17:41:22,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:22,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236166190] [2020-08-18 17:41:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,829 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:22,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 17:41:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:41:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,978 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 17:41:22,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236166190] [2020-08-18 17:41:22,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:22,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:41:22,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117928925] [2020-08-18 17:41:22,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:41:22,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:22,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:41:22,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:41:22,987 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 9 states. [2020-08-18 17:41:23,336 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:23,649 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:23,924 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:24,179 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:24,992 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:26,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:26,253 INFO L93 Difference]: Finished difference Result 374 states and 471 transitions. [2020-08-18 17:41:26,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:41:26,256 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 17:41:26,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:26,261 INFO L225 Difference]: With dead ends: 374 [2020-08-18 17:41:26,261 INFO L226 Difference]: Without dead ends: 292 [2020-08-18 17:41:26,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:41:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-18 17:41:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 223. [2020-08-18 17:41:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-18 17:41:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 268 transitions. [2020-08-18 17:41:26,333 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 268 transitions. Word has length 56 [2020-08-18 17:41:26,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:26,334 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 268 transitions. [2020-08-18 17:41:26,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:41:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 268 transitions. [2020-08-18 17:41:26,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 17:41:26,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:26,336 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] [2020-08-18 17:41:26,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:41:26,337 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:26,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:26,337 INFO L82 PathProgramCache]: Analyzing trace with hash 466387433, now seen corresponding path program 1 times [2020-08-18 17:41:26,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:26,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753676733] [2020-08-18 17:41:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:26,607 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:26,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:26,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:26,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:26,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:26,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:26,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:26,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:41:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:26,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:41:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:26,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 17:41:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:26,731 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 17:41:26,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753676733] [2020-08-18 17:41:26,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:26,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:41:26,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306890388] [2020-08-18 17:41:26,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:41:26,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:26,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:41:26,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:41:26,734 INFO L87 Difference]: Start difference. First operand 223 states and 268 transitions. Second operand 9 states. [2020-08-18 17:41:27,076 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:28,193 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:28,483 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:28,750 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:28,976 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:29,942 INFO L93 Difference]: Finished difference Result 711 states and 943 transitions. [2020-08-18 17:41:29,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 17:41:29,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 17:41:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:29,949 INFO L225 Difference]: With dead ends: 711 [2020-08-18 17:41:29,950 INFO L226 Difference]: Without dead ends: 516 [2020-08-18 17:41:29,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 17:41:29,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-08-18 17:41:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 394. [2020-08-18 17:41:30,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-08-18 17:41:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 476 transitions. [2020-08-18 17:41:30,071 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 476 transitions. Word has length 62 [2020-08-18 17:41:30,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:30,072 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 476 transitions. [2020-08-18 17:41:30,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:41:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 476 transitions. [2020-08-18 17:41:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 17:41:30,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:30,075 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] [2020-08-18 17:41:30,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:41:30,075 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:30,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:30,075 INFO L82 PathProgramCache]: Analyzing trace with hash -995650491, now seen corresponding path program 1 times [2020-08-18 17:41:30,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:30,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552299005] [2020-08-18 17:41:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,371 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:41:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 17:41:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 17:41:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 17:41:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,516 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 17:41:30,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552299005] [2020-08-18 17:41:30,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:30,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:41:30,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494811815] [2020-08-18 17:41:30,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:41:30,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:30,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:41:30,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:41:30,521 INFO L87 Difference]: Start difference. First operand 394 states and 476 transitions. Second operand 10 states. [2020-08-18 17:41:30,936 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:32,008 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:32,322 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:32,582 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:33,128 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:34,184 INFO L93 Difference]: Finished difference Result 1128 states and 1528 transitions. [2020-08-18 17:41:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 17:41:34,186 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 17:41:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:34,198 INFO L225 Difference]: With dead ends: 1128 [2020-08-18 17:41:34,198 INFO L226 Difference]: Without dead ends: 762 [2020-08-18 17:41:34,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 17:41:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-08-18 17:41:34,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 577. [2020-08-18 17:41:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-08-18 17:41:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 699 transitions. [2020-08-18 17:41:34,332 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 699 transitions. Word has length 66 [2020-08-18 17:41:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:34,333 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 699 transitions. [2020-08-18 17:41:34,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:41:34,333 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 699 transitions. [2020-08-18 17:41:34,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 17:41:34,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:34,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:41:34,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:41:34,336 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:34,337 INFO L82 PathProgramCache]: Analyzing trace with hash 155563889, now seen corresponding path program 1 times [2020-08-18 17:41:34,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:34,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185896129] [2020-08-18 17:41:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,635 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:34,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:41:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:41:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 17:41:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 17:41:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,776 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 17:41:34,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185896129] [2020-08-18 17:41:34,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:34,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:41:34,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824296671] [2020-08-18 17:41:34,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:41:34,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:34,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:41:34,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:41:34,781 INFO L87 Difference]: Start difference. First operand 577 states and 699 transitions. Second operand 10 states. [2020-08-18 17:41:35,226 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:36,167 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:36,418 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:41:36,707 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:36,991 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:38,927 INFO L93 Difference]: Finished difference Result 2076 states and 2977 transitions. [2020-08-18 17:41:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 17:41:38,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 17:41:38,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:38,939 INFO L225 Difference]: With dead ends: 2076 [2020-08-18 17:41:38,939 INFO L226 Difference]: Without dead ends: 1527 [2020-08-18 17:41:38,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-18 17:41:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2020-08-18 17:41:39,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1103. [2020-08-18 17:41:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-18 17:41:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1340 transitions. [2020-08-18 17:41:39,262 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1340 transitions. Word has length 83 [2020-08-18 17:41:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:39,262 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1340 transitions. [2020-08-18 17:41:39,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:41:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1340 transitions. [2020-08-18 17:41:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 17:41:39,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:39,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:41:39,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:41:39,271 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:39,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1955726480, now seen corresponding path program 1 times [2020-08-18 17:41:39,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:39,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136704069] [2020-08-18 17:41:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,644 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:39,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:41:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:41:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 17:41:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 17:41:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:39,835 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 17:41:39,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136704069] [2020-08-18 17:41:39,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:39,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:41:39,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159329735] [2020-08-18 17:41:39,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:41:39,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:39,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:41:39,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:41:39,844 INFO L87 Difference]: Start difference. First operand 1103 states and 1340 transitions. Second operand 10 states. [2020-08-18 17:41:40,982 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:41,256 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:41:41,525 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:41,773 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:42,988 INFO L93 Difference]: Finished difference Result 2615 states and 3505 transitions. [2020-08-18 17:41:42,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:41:42,989 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 17:41:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:42,999 INFO L225 Difference]: With dead ends: 2615 [2020-08-18 17:41:42,999 INFO L226 Difference]: Without dead ends: 1540 [2020-08-18 17:41:43,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:41:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-08-18 17:41:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1143. [2020-08-18 17:41:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-08-18 17:41:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1380 transitions. [2020-08-18 17:41:43,333 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1380 transitions. Word has length 83 [2020-08-18 17:41:43,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:43,334 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1380 transitions. [2020-08-18 17:41:43,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:41:43,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1380 transitions. [2020-08-18 17:41:43,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 17:41:43,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:43,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:41:43,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:41:43,341 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:43,342 INFO L82 PathProgramCache]: Analyzing trace with hash -569523086, now seen corresponding path program 1 times [2020-08-18 17:41:43,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:43,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389065720] [2020-08-18 17:41:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,709 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:43,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:41:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:41:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 17:41:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 17:41:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:43,849 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 17:41:43,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389065720] [2020-08-18 17:41:43,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:43,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 17:41:43,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742585961] [2020-08-18 17:41:43,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:41:43,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:43,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:41:43,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:41:43,856 INFO L87 Difference]: Start difference. First operand 1143 states and 1380 transitions. Second operand 12 states. [2020-08-18 17:41:44,354 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:44,600 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:44,855 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:45,544 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:45,811 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:46,061 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:47,224 INFO L93 Difference]: Finished difference Result 2319 states and 3065 transitions. [2020-08-18 17:41:47,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:41:47,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-18 17:41:47,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:47,235 INFO L225 Difference]: With dead ends: 2319 [2020-08-18 17:41:47,235 INFO L226 Difference]: Without dead ends: 1204 [2020-08-18 17:41:47,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 17:41:47,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2020-08-18 17:41:47,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 927. [2020-08-18 17:41:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-18 17:41:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1088 transitions. [2020-08-18 17:41:47,422 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1088 transitions. Word has length 83 [2020-08-18 17:41:47,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:47,422 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1088 transitions. [2020-08-18 17:41:47,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:41:47,422 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1088 transitions. [2020-08-18 17:41:47,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 17:41:47,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:47,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:41:47,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:41:47,425 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:47,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:47,426 INFO L82 PathProgramCache]: Analyzing trace with hash 855595353, now seen corresponding path program 1 times [2020-08-18 17:41:47,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:47,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843235617] [2020-08-18 17:41:47,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,683 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:41:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:41:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:41:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 17:41:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 17:41:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:47,780 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 17:41:47,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843235617] [2020-08-18 17:41:47,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:47,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:41:47,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157999537] [2020-08-18 17:41:47,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:41:47,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:47,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:41:47,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:41:47,783 INFO L87 Difference]: Start difference. First operand 927 states and 1088 transitions. Second operand 8 states. [2020-08-18 17:41:48,160 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:50,453 INFO L93 Difference]: Finished difference Result 1851 states and 2454 transitions. [2020-08-18 17:41:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 17:41:50,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-08-18 17:41:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:50,465 INFO L225 Difference]: With dead ends: 1851 [2020-08-18 17:41:50,465 INFO L226 Difference]: Without dead ends: 1848 [2020-08-18 17:41:50,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 17:41:50,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2020-08-18 17:41:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1424. [2020-08-18 17:41:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2020-08-18 17:41:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1688 transitions. [2020-08-18 17:41:50,832 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1688 transitions. Word has length 87 [2020-08-18 17:41:50,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:50,834 INFO L479 AbstractCegarLoop]: Abstraction has 1424 states and 1688 transitions. [2020-08-18 17:41:50,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:41:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1688 transitions. [2020-08-18 17:41:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-18 17:41:50,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:50,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:41:50,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:41:50,845 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:50,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:50,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1738865668, now seen corresponding path program 1 times [2020-08-18 17:41:50,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:50,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622967323] [2020-08-18 17:41:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:41:50,923 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:41:50,923 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:41:50,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:41:50,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:41:50 BoogieIcfgContainer [2020-08-18 17:41:50,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:41:50,975 INFO L168 Benchmark]: Toolchain (without parser) took 34254.72 ms. Allocated memory was 140.0 MB in the beginning and 703.1 MB in the end (delta: 563.1 MB). Free memory was 102.9 MB in the beginning and 624.2 MB in the end (delta: -521.3 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2020-08-18 17:41:50,976 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:41:50,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.30 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 172.2 MB in the end (delta: -69.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:41:50,984 INFO L168 Benchmark]: Boogie Preprocessor took 88.85 ms. Allocated memory is still 203.4 MB. Free memory was 172.2 MB in the beginning and 167.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:41:50,985 INFO L168 Benchmark]: RCFGBuilder took 1167.14 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.8 MB in the beginning and 196.7 MB in the end (delta: -28.9 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:41:50,985 INFO L168 Benchmark]: TraceAbstraction took 32327.05 ms. Allocated memory was 235.9 MB in the beginning and 703.1 MB in the end (delta: 467.1 MB). Free memory was 195.3 MB in the beginning and 624.2 MB in the end (delta: -428.9 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:41:50,993 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 665.30 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 172.2 MB in the end (delta: -69.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.85 ms. Allocated memory is still 203.4 MB. Free memory was 172.2 MB in the beginning and 167.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1167.14 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.8 MB in the beginning and 196.7 MB in the end (delta: -28.9 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32327.05 ms. Allocated memory was 235.9 MB in the beginning and 703.1 MB in the end (delta: 467.1 MB). Free memory was 195.3 MB in the beginning and 624.2 MB in the end (delta: -428.9 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 736]: 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; [L416] int pumpRunning = 0; [L417] int systemActive = 1; [L655] int methAndRunningLastTime ; [L741] int cleanupTimeShifts = 4; [L839] int waterLevel = 1; [L840] int methaneLevelCritical = 0; [L815] int retValue_acc ; [L816] int tmp ; [L820] FCALL select_helpers() [L821] FCALL select_features() [L822] CALL, EXPR valid_product() [L723] int retValue_acc ; [L726] retValue_acc = 1 [L727] return (retValue_acc); [L822] RET, EXPR valid_product() [L822] tmp = valid_product() [L824] COND TRUE \read(tmp) [L826] FCALL setup() [L827] CALL runTest() [L808] CALL __utac_acc__Specification2_spec__1() [L660] methAndRunningLastTime = 0 [L808] RET __utac_acc__Specification2_spec__1() [L809] CALL test() [L588] int splverifierCounter ; [L589] int tmp ; [L590] int tmp___0 ; [L591] int tmp___1 ; [L592] int tmp___2 ; [L595] splverifierCounter = 0 [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND TRUE \read(tmp) [L609] CALL waterRise() [L857] COND TRUE waterLevel < 2 [L858] waterLevel = waterLevel + 1 [L609] RET waterRise() [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND TRUE \read(tmp___0) [L619] CALL changeMethaneLevel() [L869] COND FALSE !(\read(methaneLevelCritical)) [L872] methaneLevelCritical = 1 [L619] RET changeMethaneLevel() [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND FALSE !(\read(pumpRunning)) [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND TRUE ! pumpRunning [L458] CALL, EXPR isHighWaterLevel() [L550] int retValue_acc ; [L551] int tmp ; [L552] int tmp___0 ; [L556] CALL, EXPR isHighWaterSensorDry() [L919] int retValue_acc ; [L922] COND FALSE !(waterLevel < 2) [L926] retValue_acc = 0 [L927] return (retValue_acc); [L556] RET, EXPR isHighWaterSensorDry() [L556] tmp = isHighWaterSensorDry() [L558] COND FALSE !(\read(tmp)) [L561] tmp___0 = 1 [L563] retValue_acc = tmp___0 [L564] return (retValue_acc); [L458] RET, EXPR isHighWaterLevel() [L458] tmp = isHighWaterLevel() [L460] COND TRUE \read(tmp) [L462] CALL activatePump() [L481] pumpRunning = 1 [L462] RET activatePump() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND FALSE !(\read(methAndRunningLastTime)) [L682] methAndRunningLastTime = 1 [L439] RET __utac_acc__Specification2_spec__2() [L642] RET timeShift() [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND FALSE !(\read(tmp)) [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND FALSE !(\read(tmp___0)) [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND TRUE \read(pumpRunning) [L426] CALL lowerWaterLevel() [L845] COND TRUE waterLevel > 0 [L846] waterLevel = waterLevel - 1 [L426] RET lowerWaterLevel() [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND FALSE !(! pumpRunning) [L471] FCALL processEnvironment__wrappee__base() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND TRUE \read(methAndRunningLastTime) [L679] CALL __automaton_fail() [L736] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.2s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 25.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 916 SDtfs, 2503 SDslu, 1338 SDs, 0 SdLazy, 5820 SolverSat, 1722 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1424occurred 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: 1.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 1961 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 752 NumberOfCodeBlocks, 752 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 188498 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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...