/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:29:33,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:29:33,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:29:33,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:29:33,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:29:33,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:29:33,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:29:33,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:29:33,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:29:33,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:29:33,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:29:33,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:29:33,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:29:33,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:29:33,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:29:33,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:29:33,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:29:33,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:29:33,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:29:33,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:29:33,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:29:33,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:29:33,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:29:33,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:29:33,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:29:33,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:29:33,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:29:33,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:29:33,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:29:33,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:29:33,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:29:33,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:29:33,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:29:33,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:29:33,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:29:33,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:29:33,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:29:33,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:29:33,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:29:33,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:29:33,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:29:33,573 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 [2020-08-21 15:29:33,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:29:33,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:29:33,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:29:33,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:29:33,619 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:29:33,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:29:33,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:29:33,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:29:33,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:29:33,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:29:33,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:29:33,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:29:33,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:29:33,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:29:33,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:29:33,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:29:33,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:29:33,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:29:33,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:29:33,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:29:33,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:29:33,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:29:33,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:29:33,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:29:33,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:29:33,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:29:33,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:29:33,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:29:33,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:29:33,625 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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:29:33,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:29:33,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:29:33,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:29:33,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:29:33,956 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:29:33,957 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-21 15:29:34,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22c31f92f/81a707fcad4646f18cead14f787c9cb4/FLAGccf360d8f [2020-08-21 15:29:34,644 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:29:34,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-21 15:29:34,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22c31f92f/81a707fcad4646f18cead14f787c9cb4/FLAGccf360d8f [2020-08-21 15:29:34,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22c31f92f/81a707fcad4646f18cead14f787c9cb4 [2020-08-21 15:29:34,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:29:34,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:29:34,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:29:34,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:29:34,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:29:34,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:29:34" (1/1) ... [2020-08-21 15:29:34,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483c82f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:34, skipping insertion in model container [2020-08-21 15:29:34,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:29:34" (1/1) ... [2020-08-21 15:29:34,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:29:35,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:29:35,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:29:35,438 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:29:35,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:29:35,557 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:29:35,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:35 WrapperNode [2020-08-21 15:29:35,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:29:35,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:29:35,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:29:35,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:29:35,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:35" (1/1) ... [2020-08-21 15:29:35,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:35" (1/1) ... [2020-08-21 15:29:35,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:35" (1/1) ... [2020-08-21 15:29:35,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:35" (1/1) ... [2020-08-21 15:29:35,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:35" (1/1) ... [2020-08-21 15:29:35,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:35" (1/1) ... [2020-08-21 15:29:35,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:35" (1/1) ... [2020-08-21 15:29:35,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:29:35,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:29:35,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:29:35,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:29:35,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:35" (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 [2020-08-21 15:29:35,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:29:35,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:29:35,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:29:35,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:29:35,707 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:29:35,707 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:29:35,707 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:29:35,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:29:35,707 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:29:35,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:29:35,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:29:35,708 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:29:35,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 15:29:35,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:29:35,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:29:35,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:29:35,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:29:35,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:29:35,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:29:35,709 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:29:35,709 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:29:35,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:29:35,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:29:35,710 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:29:35,710 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:29:35,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:29:35,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:29:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:29:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:29:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:29:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:29:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:29:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:29:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:29:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:29:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:29:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:29:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:29:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:29:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:29:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:29:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:29:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:29:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:29:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:29:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:29:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:29:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:29:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:29:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:29:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:29:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:29:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:29:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:29:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:29:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:29:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:29:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:29:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:29:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 15:29:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:29:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:29:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:29:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:29:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:29:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:29:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:29:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:29:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:29:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:29:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:29:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:29:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:29:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:29:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:29:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:29:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:29:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:29:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:29:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:29:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:29:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:29:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:29:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:29:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:29:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:29:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:29:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:29:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:29:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:29:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:29:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:29:36,822 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:29:36,823 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:29:36,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:29:36 BoogieIcfgContainer [2020-08-21 15:29:36,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:29:36,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:29:36,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:29:36,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:29:36,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:29:34" (1/3) ... [2020-08-21 15:29:36,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b0488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:29:36, skipping insertion in model container [2020-08-21 15:29:36,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:35" (2/3) ... [2020-08-21 15:29:36,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b0488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:29:36, skipping insertion in model container [2020-08-21 15:29:36,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:29:36" (3/3) ... [2020-08-21 15:29:36,836 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2020-08-21 15:29:36,846 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:29:36,854 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:29:36,868 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:29:36,891 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:29:36,892 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:29:36,892 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:29:36,892 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:29:36,892 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:29:36,892 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:29:36,892 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:29:36,893 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:29:36,914 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 15:29:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 15:29:36,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:36,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:29:36,925 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:36,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:36,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1406508770, now seen corresponding path program 1 times [2020-08-21 15:29:36,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:36,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054229072] [2020-08-21 15:29:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,606 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:37,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:29:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:29:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:37,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054229072] [2020-08-21 15:29:37,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:37,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:29:37,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819858417] [2020-08-21 15:29:37,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:29:37,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:37,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:29:37,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:29:37,716 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 15:29:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:38,839 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2020-08-21 15:29:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:29:38,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 15:29:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:38,856 INFO L225 Difference]: With dead ends: 296 [2020-08-21 15:29:38,857 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 15:29:38,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:29:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 15:29:38,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-21 15:29:38,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 15:29:38,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2020-08-21 15:29:38,949 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 46 [2020-08-21 15:29:38,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:38,950 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2020-08-21 15:29:38,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:29:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2020-08-21 15:29:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 15:29:38,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:38,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:29:38,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:29:38,955 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:38,955 INFO L82 PathProgramCache]: Analyzing trace with hash 297997714, now seen corresponding path program 1 times [2020-08-21 15:29:38,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:38,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469179198] [2020-08-21 15:29:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,397 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:39,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:29:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:29:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:39,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469179198] [2020-08-21 15:29:39,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:39,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:29:39,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214540182] [2020-08-21 15:29:39,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:29:39,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:39,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:29:39,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:29:39,442 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand 4 states. [2020-08-21 15:29:39,878 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:40,748 INFO L93 Difference]: Finished difference Result 225 states and 275 transitions. [2020-08-21 15:29:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:29:40,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 15:29:40,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:40,753 INFO L225 Difference]: With dead ends: 225 [2020-08-21 15:29:40,753 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 15:29:40,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:29:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 15:29:40,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 15:29:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 15:29:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-21 15:29:40,817 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 47 [2020-08-21 15:29:40,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:40,818 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-21 15:29:40,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:29:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-21 15:29:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 15:29:40,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:40,820 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] [2020-08-21 15:29:40,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:29:40,821 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:40,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:40,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1416539958, now seen corresponding path program 1 times [2020-08-21 15:29:40,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:40,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111741593] [2020-08-21 15:29:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:41,165 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:41,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:41,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:41,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:41,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:41,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:29:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:41,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:29:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:41,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111741593] [2020-08-21 15:29:41,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:41,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:29:41,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77161443] [2020-08-21 15:29:41,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:29:41,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:41,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:29:41,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:29:41,305 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 8 states. [2020-08-21 15:29:41,678 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:42,007 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:42,261 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:42,503 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:43,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:43,665 INFO L93 Difference]: Finished difference Result 238 states and 293 transitions. [2020-08-21 15:29:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:29:43,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 15:29:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:43,669 INFO L225 Difference]: With dead ends: 238 [2020-08-21 15:29:43,670 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 15:29:43,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:29:43,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 15:29:43,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 15:29:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 15:29:43,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-21 15:29:43,719 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 52 [2020-08-21 15:29:43,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:43,719 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-21 15:29:43,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:29:43,719 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-21 15:29:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 15:29:43,722 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:43,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:29:43,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:29:43,723 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:43,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:43,723 INFO L82 PathProgramCache]: Analyzing trace with hash -819223945, now seen corresponding path program 1 times [2020-08-21 15:29:43,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:43,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515931438] [2020-08-21 15:29:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,032 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:44,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:29:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 15:29:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 15:29:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:44,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515931438] [2020-08-21 15:29:44,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:44,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:29:44,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310069000] [2020-08-21 15:29:44,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:29:44,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:44,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:29:44,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:29:44,144 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 6 states. [2020-08-21 15:29:44,460 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:45,586 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:46,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:46,294 INFO L93 Difference]: Finished difference Result 335 states and 415 transitions. [2020-08-21 15:29:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:29:46,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 15:29:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:46,299 INFO L225 Difference]: With dead ends: 335 [2020-08-21 15:29:46,299 INFO L226 Difference]: Without dead ends: 241 [2020-08-21 15:29:46,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:29:46,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-21 15:29:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 198. [2020-08-21 15:29:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-08-21 15:29:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions. [2020-08-21 15:29:46,352 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 65 [2020-08-21 15:29:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:46,352 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 225 transitions. [2020-08-21 15:29:46,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:29:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions. [2020-08-21 15:29:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 15:29:46,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:46,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:29:46,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:29:46,355 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:46,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:46,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1180966768, now seen corresponding path program 1 times [2020-08-21 15:29:46,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:46,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542671171] [2020-08-21 15:29:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,627 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:46,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:29:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 15:29:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:29:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:46,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542671171] [2020-08-21 15:29:46,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:46,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:29:46,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004662060] [2020-08-21 15:29:46,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:29:46,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:46,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:29:46,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:29:46,747 INFO L87 Difference]: Start difference. First operand 198 states and 225 transitions. Second operand 8 states. [2020-08-21 15:29:47,105 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:48,212 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:48,479 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:48,708 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:48,962 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:49,242 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:50,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:50,234 INFO L93 Difference]: Finished difference Result 592 states and 731 transitions. [2020-08-21 15:29:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:29:50,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-21 15:29:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:50,240 INFO L225 Difference]: With dead ends: 592 [2020-08-21 15:29:50,240 INFO L226 Difference]: Without dead ends: 418 [2020-08-21 15:29:50,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:29:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-21 15:29:50,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 351. [2020-08-21 15:29:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-21 15:29:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 400 transitions. [2020-08-21 15:29:50,350 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 400 transitions. Word has length 79 [2020-08-21 15:29:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:50,351 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 400 transitions. [2020-08-21 15:29:50,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:29:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 400 transitions. [2020-08-21 15:29:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 15:29:50,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:50,353 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] [2020-08-21 15:29:50,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:29:50,354 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:50,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:50,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1165038356, now seen corresponding path program 1 times [2020-08-21 15:29:50,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:50,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794446825] [2020-08-21 15:29:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,637 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:29:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:29:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 15:29:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 15:29:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:50,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794446825] [2020-08-21 15:29:50,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:50,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:29:50,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415493386] [2020-08-21 15:29:50,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:29:50,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:50,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:29:50,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:29:50,753 INFO L87 Difference]: Start difference. First operand 351 states and 400 transitions. Second operand 9 states. [2020-08-21 15:29:51,213 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:52,323 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:52,542 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:52,803 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:53,058 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:53,286 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:54,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:54,290 INFO L93 Difference]: Finished difference Result 460 states and 580 transitions. [2020-08-21 15:29:54,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:29:54,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 15:29:54,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:54,296 INFO L225 Difference]: With dead ends: 460 [2020-08-21 15:29:54,296 INFO L226 Difference]: Without dead ends: 457 [2020-08-21 15:29:54,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:29:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-08-21 15:29:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 351. [2020-08-21 15:29:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-21 15:29:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 399 transitions. [2020-08-21 15:29:54,367 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 399 transitions. Word has length 83 [2020-08-21 15:29:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:54,367 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 399 transitions. [2020-08-21 15:29:54,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:29:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 399 transitions. [2020-08-21 15:29:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 15:29:54,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:54,369 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] [2020-08-21 15:29:54,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:29:54,370 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:54,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:54,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1066260182, now seen corresponding path program 1 times [2020-08-21 15:29:54,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:54,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550354970] [2020-08-21 15:29:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,610 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:29:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:29:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 15:29:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 15:29:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:54,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550354970] [2020-08-21 15:29:54,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:54,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:29:54,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517891811] [2020-08-21 15:29:54,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:29:54,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:54,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:29:54,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:29:54,736 INFO L87 Difference]: Start difference. First operand 351 states and 399 transitions. Second operand 9 states. [2020-08-21 15:29:55,622 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:55,864 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:29:56,099 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:56,326 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:57,286 INFO L93 Difference]: Finished difference Result 788 states and 970 transitions. [2020-08-21 15:29:57,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:29:57,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 15:29:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:57,290 INFO L225 Difference]: With dead ends: 788 [2020-08-21 15:29:57,290 INFO L226 Difference]: Without dead ends: 461 [2020-08-21 15:29:57,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:29:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-08-21 15:29:57,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 361. [2020-08-21 15:29:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-21 15:29:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-21 15:29:57,364 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 84 [2020-08-21 15:29:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:57,365 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-21 15:29:57,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:29:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-21 15:29:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 15:29:57,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:57,367 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] [2020-08-21 15:29:57,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:29:57,367 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:57,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1088892436, now seen corresponding path program 1 times [2020-08-21 15:29:57,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:57,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673231152] [2020-08-21 15:29:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,609 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:29:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:29:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 15:29:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 15:29:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:57,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673231152] [2020-08-21 15:29:57,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:57,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 15:29:57,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129909500] [2020-08-21 15:29:57,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:29:57,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:57,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:29:57,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:29:57,756 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 11 states. [2020-08-21 15:29:58,433 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:58,662 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:58,903 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:59,505 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:59,754 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:59,988 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:01,017 INFO L93 Difference]: Finished difference Result 812 states and 1010 transitions. [2020-08-21 15:30:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:30:01,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-21 15:30:01,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:01,021 INFO L225 Difference]: With dead ends: 812 [2020-08-21 15:30:01,021 INFO L226 Difference]: Without dead ends: 475 [2020-08-21 15:30:01,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:30:01,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-08-21 15:30:01,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 369. [2020-08-21 15:30:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-21 15:30:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 417 transitions. [2020-08-21 15:30:01,099 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 417 transitions. Word has length 84 [2020-08-21 15:30:01,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:01,099 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 417 transitions. [2020-08-21 15:30:01,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:30:01,099 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 417 transitions. [2020-08-21 15:30:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 15:30:01,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:01,101 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] [2020-08-21 15:30:01,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:30:01,101 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:01,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:01,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2114384435, now seen corresponding path program 1 times [2020-08-21 15:30:01,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:01,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536269110] [2020-08-21 15:30:01,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,347 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:01,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:30:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:30:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:30:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 15:30:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 15:30:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:30:01,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536269110] [2020-08-21 15:30:01,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:01,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:30:01,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057346796] [2020-08-21 15:30:01,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:30:01,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:01,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:30:01,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:30:01,472 INFO L87 Difference]: Start difference. First operand 369 states and 417 transitions. Second operand 7 states. [2020-08-21 15:30:01,771 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:02,316 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:04,282 INFO L93 Difference]: Finished difference Result 1154 states and 1484 transitions. [2020-08-21 15:30:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:30:04,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-21 15:30:04,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:04,290 INFO L225 Difference]: With dead ends: 1154 [2020-08-21 15:30:04,291 INFO L226 Difference]: Without dead ends: 809 [2020-08-21 15:30:04,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:30:04,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-08-21 15:30:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 689. [2020-08-21 15:30:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-08-21 15:30:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 811 transitions. [2020-08-21 15:30:04,538 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 811 transitions. Word has length 84 [2020-08-21 15:30:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:04,542 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 811 transitions. [2020-08-21 15:30:04,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:30:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 811 transitions. [2020-08-21 15:30:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 15:30:04,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:04,549 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, 1] [2020-08-21 15:30:04,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:30:04,549 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:04,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:04,549 INFO L82 PathProgramCache]: Analyzing trace with hash 166319437, now seen corresponding path program 1 times [2020-08-21 15:30:04,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:04,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804797280] [2020-08-21 15:30:04,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:30:04,642 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:30:04,642 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:30:04,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:30:04,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:30:04 BoogieIcfgContainer [2020-08-21 15:30:04,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:30:04,712 INFO L168 Benchmark]: Toolchain (without parser) took 29780.90 ms. Allocated memory was 142.6 MB in the beginning and 602.9 MB in the end (delta: 460.3 MB). Free memory was 104.0 MB in the beginning and 483.6 MB in the end (delta: -379.6 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-08-21 15:30:04,713 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 15:30:04,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.50 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 103.8 MB in the beginning and 172.8 MB in the end (delta: -69.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:30:04,717 INFO L168 Benchmark]: Boogie Preprocessor took 87.38 ms. Allocated memory is still 205.0 MB. Free memory was 172.8 MB in the beginning and 169.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-21 15:30:04,722 INFO L168 Benchmark]: RCFGBuilder took 1182.34 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 169.0 MB in the beginning and 190.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 78.7 MB. Max. memory is 7.1 GB. [2020-08-21 15:30:04,724 INFO L168 Benchmark]: TraceAbstraction took 27870.40 ms. Allocated memory was 234.4 MB in the beginning and 602.9 MB in the end (delta: 368.6 MB). Free memory was 189.3 MB in the beginning and 483.6 MB in the end (delta: -294.3 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:30:04,733 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 633.50 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 103.8 MB in the beginning and 172.8 MB in the end (delta: -69.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.38 ms. Allocated memory is still 205.0 MB. Free memory was 172.8 MB in the beginning and 169.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1182.34 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 169.0 MB in the beginning and 190.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 78.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27870.40 ms. Allocated memory was 234.4 MB in the beginning and 602.9 MB in the end (delta: 368.6 MB). Free memory was 189.3 MB in the beginning and 483.6 MB in the end (delta: -294.3 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 837]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND FALSE !(\read(tmp___2)) [L812] tmp___1 = __VERIFIER_nondet_int() [L814] COND TRUE \read(tmp___1) [L821] CALL timeShift() [L587] COND FALSE !(\read(pumpRunning)) [L594] COND TRUE \read(systemActive) [L596] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__highWaterSensor() [L616] int tmp ; [L619] COND TRUE ! pumpRunning [L621] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L621] RET, EXPR isHighWaterLevel() [L621] tmp = isHighWaterLevel() [L623] COND TRUE \read(tmp) [L625] CALL activatePump() [L670] pumpRunning = 1 [L625] RET activatePump() [L660] RET processEnvironment__wrappee__highWaterSensor() [L596] RET processEnvironment() [L602] CALL __utac_acc__Specification1_spec__1() [L183] int tmp ; [L184] int tmp___0 ; [L188] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L188] RET, EXPR isMethaneLevelCritical() [L188] tmp = isMethaneLevelCritical() [L190] COND TRUE \read(tmp) [L192] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L192] RET, EXPR isPumpRunning() [L192] tmp___0 = isPumpRunning() [L194] COND TRUE \read(tmp___0) [L196] CALL __automaton_fail() [L837] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1051 SDtfs, 1883 SDslu, 984 SDs, 0 SdLazy, 4951 SolverSat, 1281 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=689occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190312 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...