/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:15:55,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:15:55,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:15:55,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:15:55,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:15:55,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:15:55,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:15:55,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:15:55,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:15:55,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:15:55,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:15:55,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:15:55,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:15:55,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:15:55,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:15:55,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:15:55,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:15:55,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:15:55,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:15:55,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:15:55,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:15:55,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:15:55,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:15:55,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:15:55,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:15:55,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:15:55,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:15:55,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:15:55,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:15:55,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:15:55,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:15:55,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:15:55,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:15:55,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:15:55,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:15:55,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:15:55,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:15:55,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:15:55,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:15:55,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:15:55,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:15:55,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 19:15:55,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:15:55,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:15:55,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:15:55,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:15:55,660 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:15:55,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:15:55,660 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:15:55,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:15:55,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:15:55,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:15:55,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:15:55,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:15:55,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:15:55,663 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:15:55,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:15:55,663 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:15:55,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:15:55,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:15:55,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:15:55,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:15:55,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:15:55,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:15:55,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:15:55,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:15:55,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:15:55,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:15:55,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:15:55,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:15:55,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:15:55,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:15:55,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:15:55,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:15:55,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:15:55,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:15:55,984 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:15:55,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-18 19:15:56,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7021dc97e/4db6aa94826e4029b5a609a982a0b466/FLAGc7b541476 [2020-08-18 19:15:56,613 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:15:56,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-18 19:15:56,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7021dc97e/4db6aa94826e4029b5a609a982a0b466/FLAGc7b541476 [2020-08-18 19:15:56,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7021dc97e/4db6aa94826e4029b5a609a982a0b466 [2020-08-18 19:15:56,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:15:56,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:15:56,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:15:56,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:15:56,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:15:56,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:15:56" (1/1) ... [2020-08-18 19:15:56,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:56, skipping insertion in model container [2020-08-18 19:15:56,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:15:56" (1/1) ... [2020-08-18 19:15:56,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:15:56,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:15:57,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:15:57,252 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:15:57,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:15:57,507 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:15:57,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:57 WrapperNode [2020-08-18 19:15:57,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:15:57,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:15:57,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:15:57,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:15:57,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:57" (1/1) ... [2020-08-18 19:15:57,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:57" (1/1) ... [2020-08-18 19:15:57,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:57" (1/1) ... [2020-08-18 19:15:57,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:57" (1/1) ... [2020-08-18 19:15:57,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:57" (1/1) ... [2020-08-18 19:15:57,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:57" (1/1) ... [2020-08-18 19:15:57,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:57" (1/1) ... [2020-08-18 19:15:57,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:15:57,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:15:57,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:15:57,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:15:57,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:15:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:15:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:15:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:15:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:15:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:15:57,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:15:57,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:15:57,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:15:57,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:15:57,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:15:57,728 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:15:57,729 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:15:57,729 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:15:57,729 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:15:57,729 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 19:15:57,730 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:15:57,730 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:15:57,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:15:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:15:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:15:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:15:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 19:15:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 19:15:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:15:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:15:57,732 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:15:57,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:15:57,733 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:15:57,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:15:57,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:15:57,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 19:15:57,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:15:57,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:15:57,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:15:57,734 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:15:57,734 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:15:57,734 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:15:57,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:15:57,735 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:15:57,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:15:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:15:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:15:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:15:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:15:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:15:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:15:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:15:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:15:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:15:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:15:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:15:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:15:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:15:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:15:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:15:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:15:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:15:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:15:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:15:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:15:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:15:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:15:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:15:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 19:15:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 19:15:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:15:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:15:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:15:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:15:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:15:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:15:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:15:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:15:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:15:57,746 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:15:57,746 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:15:57,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 19:15:57,747 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:15:57,747 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:15:57,747 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:15:57,747 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 19:15:57,747 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:15:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:15:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:15:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:15:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:15:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:15:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:15:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:15:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:15:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:15:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:15:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:15:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:15:58,854 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:15:58,854 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:15:58,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:15:58 BoogieIcfgContainer [2020-08-18 19:15:58,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:15:58,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:15:58,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:15:58,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:15:58,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:15:56" (1/3) ... [2020-08-18 19:15:58,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2e6dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:15:58, skipping insertion in model container [2020-08-18 19:15:58,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:57" (2/3) ... [2020-08-18 19:15:58,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2e6dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:15:58, skipping insertion in model container [2020-08-18 19:15:58,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:15:58" (3/3) ... [2020-08-18 19:15:58,868 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-08-18 19:15:58,879 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:15:58,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:15:58,901 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:15:58,925 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:15:58,925 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:15:58,925 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:15:58,925 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:15:58,925 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:15:58,926 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:15:58,926 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:15:58,926 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:15:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-18 19:15:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 19:15:58,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:58,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:15:58,959 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:58,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:58,965 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2020-08-18 19:15:58,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:58,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261387105] [2020-08-18 19:15:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:59,596 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:59,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:59,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:59,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:59,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:59,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:15:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:59,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:15:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:15:59,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261387105] [2020-08-18 19:15:59,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:59,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:15:59,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705507574] [2020-08-18 19:15:59,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:15:59,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:59,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:15:59,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:15:59,764 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-18 19:16:01,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:01,008 INFO L93 Difference]: Finished difference Result 304 states and 394 transitions. [2020-08-18 19:16:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:16:01,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 19:16:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:01,031 INFO L225 Difference]: With dead ends: 304 [2020-08-18 19:16:01,031 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 19:16:01,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:16:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 19:16:01,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 130. [2020-08-18 19:16:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 19:16:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-18 19:16:01,143 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-08-18 19:16:01,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:01,144 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-18 19:16:01,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:16:01,144 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-18 19:16:01,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 19:16:01,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:01,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:01,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:16:01,153 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:01,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:01,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2020-08-18 19:16:01,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:01,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605678320] [2020-08-18 19:16:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,504 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:01,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:16:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:16:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:16:01,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605678320] [2020-08-18 19:16:01,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:01,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:16:01,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563257027] [2020-08-18 19:16:01,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:16:01,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:01,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:16:01,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:16:01,598 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-08-18 19:16:02,017 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:02,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:02,818 INFO L93 Difference]: Finished difference Result 224 states and 271 transitions. [2020-08-18 19:16:02,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:16:02,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 19:16:02,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:02,827 INFO L225 Difference]: With dead ends: 224 [2020-08-18 19:16:02,827 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 19:16:02,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:16:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 19:16:02,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 121. [2020-08-18 19:16:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 19:16:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-08-18 19:16:02,869 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-08-18 19:16:02,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:02,869 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-08-18 19:16:02,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:16:02,870 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-08-18 19:16:02,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 19:16:02,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:02,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:02,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:16:02,875 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:02,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:02,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2020-08-18 19:16:02,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:02,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242337163] [2020-08-18 19:16:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:03,232 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:03,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:03,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:03,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:16:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:16:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:16:03,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242337163] [2020-08-18 19:16:03,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:03,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:16:03,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823315123] [2020-08-18 19:16:03,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:16:03,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:03,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:16:03,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:16:03,310 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-08-18 19:16:03,684 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:04,023 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:04,294 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:04,536 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:05,284 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:06,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:06,947 INFO L93 Difference]: Finished difference Result 418 states and 512 transitions. [2020-08-18 19:16:06,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:16:06,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 19:16:06,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:06,957 INFO L225 Difference]: With dead ends: 418 [2020-08-18 19:16:06,957 INFO L226 Difference]: Without dead ends: 321 [2020-08-18 19:16:06,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:16:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-08-18 19:16:07,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 244. [2020-08-18 19:16:07,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 19:16:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2020-08-18 19:16:07,029 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 52 [2020-08-18 19:16:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:07,030 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2020-08-18 19:16:07,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:16:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2020-08-18 19:16:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 19:16:07,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:07,033 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] [2020-08-18 19:16:07,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:16:07,033 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:07,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2020-08-18 19:16:07,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:07,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977118105] [2020-08-18 19:16:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:07,336 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:07,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:07,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:07,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:07,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:16:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:07,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:16:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 19:16:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:16:07,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977118105] [2020-08-18 19:16:07,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:07,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:16:07,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437208831] [2020-08-18 19:16:07,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:16:07,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:07,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:16:07,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:16:07,430 INFO L87 Difference]: Start difference. First operand 244 states and 290 transitions. Second operand 8 states. [2020-08-18 19:16:07,796 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:08,840 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:09,137 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:09,403 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:09,642 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:10,012 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:10,992 INFO L93 Difference]: Finished difference Result 793 states and 1017 transitions. [2020-08-18 19:16:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:16:10,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 19:16:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:10,999 INFO L225 Difference]: With dead ends: 793 [2020-08-18 19:16:11,000 INFO L226 Difference]: Without dead ends: 573 [2020-08-18 19:16:11,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:16:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-18 19:16:11,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 443. [2020-08-18 19:16:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-18 19:16:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 530 transitions. [2020-08-18 19:16:11,114 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 530 transitions. Word has length 57 [2020-08-18 19:16:11,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:11,115 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 530 transitions. [2020-08-18 19:16:11,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:16:11,115 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 530 transitions. [2020-08-18 19:16:11,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 19:16:11,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:11,118 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] [2020-08-18 19:16:11,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:16:11,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:11,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1743298223, now seen corresponding path program 1 times [2020-08-18 19:16:11,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:11,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908731820] [2020-08-18 19:16:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,442 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:11,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:16:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:16:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 19:16:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:16:11,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908731820] [2020-08-18 19:16:11,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:11,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:16:11,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449027887] [2020-08-18 19:16:11,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:16:11,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:11,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:16:11,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:16:11,561 INFO L87 Difference]: Start difference. First operand 443 states and 530 transitions. Second operand 9 states. [2020-08-18 19:16:11,952 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:12,975 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:13,286 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:13,547 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:14,202 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:14,497 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:15,372 INFO L93 Difference]: Finished difference Result 1254 states and 1644 transitions. [2020-08-18 19:16:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:16:15,373 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-18 19:16:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:15,380 INFO L225 Difference]: With dead ends: 1254 [2020-08-18 19:16:15,381 INFO L226 Difference]: Without dead ends: 835 [2020-08-18 19:16:15,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:16:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-08-18 19:16:15,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 671. [2020-08-18 19:16:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-08-18 19:16:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 815 transitions. [2020-08-18 19:16:15,533 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 815 transitions. Word has length 61 [2020-08-18 19:16:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:15,533 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 815 transitions. [2020-08-18 19:16:15,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:16:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 815 transitions. [2020-08-18 19:16:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 19:16:15,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:15,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:15,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:16:15,538 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:15,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:15,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1614775342, now seen corresponding path program 1 times [2020-08-18 19:16:15,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:15,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912884017] [2020-08-18 19:16:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,816 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:16:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:16:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 19:16:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:16:15,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912884017] [2020-08-18 19:16:15,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:15,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:16:15,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688502999] [2020-08-18 19:16:15,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:16:15,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:15,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:16:15,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:16:15,976 INFO L87 Difference]: Start difference. First operand 671 states and 815 transitions. Second operand 9 states. [2020-08-18 19:16:16,516 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:17,464 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:17,715 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:18,002 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:18,291 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:20,210 INFO L93 Difference]: Finished difference Result 2315 states and 3234 transitions. [2020-08-18 19:16:20,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:16:20,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 19:16:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:20,227 INFO L225 Difference]: With dead ends: 2315 [2020-08-18 19:16:20,228 INFO L226 Difference]: Without dead ends: 1668 [2020-08-18 19:16:20,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:16:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-08-18 19:16:20,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1271. [2020-08-18 19:16:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-08-18 19:16:20,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1540 transitions. [2020-08-18 19:16:20,512 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1540 transitions. Word has length 94 [2020-08-18 19:16:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:20,513 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1540 transitions. [2020-08-18 19:16:20,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:16:20,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1540 transitions. [2020-08-18 19:16:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 19:16:20,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:20,520 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:20,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:16:20,522 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:20,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:20,522 INFO L82 PathProgramCache]: Analyzing trace with hash 709252497, now seen corresponding path program 1 times [2020-08-18 19:16:20,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:20,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24563296] [2020-08-18 19:16:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,774 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:16:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:16:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 19:16:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:16:20,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24563296] [2020-08-18 19:16:20,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:20,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:16:20,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528544969] [2020-08-18 19:16:20,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:16:20,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:20,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:16:20,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:16:20,916 INFO L87 Difference]: Start difference. First operand 1271 states and 1540 transitions. Second operand 9 states. [2020-08-18 19:16:21,937 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:22,184 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:16:22,463 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:22,690 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:23,810 INFO L93 Difference]: Finished difference Result 2944 states and 3942 transitions. [2020-08-18 19:16:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:16:23,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 19:16:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:23,825 INFO L225 Difference]: With dead ends: 2944 [2020-08-18 19:16:23,826 INFO L226 Difference]: Without dead ends: 1697 [2020-08-18 19:16:23,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:16:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-08-18 19:16:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1311. [2020-08-18 19:16:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-08-18 19:16:24,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1580 transitions. [2020-08-18 19:16:24,034 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1580 transitions. Word has length 94 [2020-08-18 19:16:24,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:24,034 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 1580 transitions. [2020-08-18 19:16:24,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:16:24,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1580 transitions. [2020-08-18 19:16:24,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 19:16:24,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:24,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:24,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:16:24,039 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:24,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:24,039 INFO L82 PathProgramCache]: Analyzing trace with hash -188140781, now seen corresponding path program 1 times [2020-08-18 19:16:24,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:24,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810140315] [2020-08-18 19:16:24,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,293 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:24,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:16:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:16:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 19:16:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:16:24,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810140315] [2020-08-18 19:16:24,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:24,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:16:24,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98359151] [2020-08-18 19:16:24,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:16:24,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:24,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:16:24,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:16:24,458 INFO L87 Difference]: Start difference. First operand 1311 states and 1580 transitions. Second operand 11 states. [2020-08-18 19:16:24,962 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:25,191 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:25,416 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:26,128 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:26,392 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:26,629 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:27,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:27,713 INFO L93 Difference]: Finished difference Result 2566 states and 3327 transitions. [2020-08-18 19:16:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:16:27,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-18 19:16:27,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:27,722 INFO L225 Difference]: With dead ends: 2566 [2020-08-18 19:16:27,723 INFO L226 Difference]: Without dead ends: 1279 [2020-08-18 19:16:27,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:16:27,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-18 19:16:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1029. [2020-08-18 19:16:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-08-18 19:16:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1212 transitions. [2020-08-18 19:16:27,926 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1212 transitions. Word has length 94 [2020-08-18 19:16:27,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:27,926 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1212 transitions. [2020-08-18 19:16:27,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:16:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1212 transitions. [2020-08-18 19:16:27,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 19:16:27,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:27,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:27,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:16:27,931 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:27,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:27,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1347463022, now seen corresponding path program 1 times [2020-08-18 19:16:27,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:27,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611124883] [2020-08-18 19:16:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,208 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:28,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:16:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:16:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:16:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:16:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 19:16:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 19:16:28,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611124883] [2020-08-18 19:16:28,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:16:28,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 19:16:28,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80141687] [2020-08-18 19:16:28,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 19:16:28,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:28,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 19:16:28,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 19:16:28,524 INFO L87 Difference]: Start difference. First operand 1029 states and 1212 transitions. Second operand 17 states. [2020-08-18 19:16:29,220 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:29,536 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:29,794 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:30,025 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:30,624 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:31,252 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:31,630 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:32,644 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:32,933 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:33,256 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:33,522 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:34,074 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 19:16:34,584 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 19:16:35,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:35,894 INFO L93 Difference]: Finished difference Result 2268 states and 2829 transitions. [2020-08-18 19:16:35,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 19:16:35,895 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-08-18 19:16:35,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:35,903 INFO L225 Difference]: With dead ends: 2268 [2020-08-18 19:16:35,903 INFO L226 Difference]: Without dead ends: 1263 [2020-08-18 19:16:35,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 19:16:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2020-08-18 19:16:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1007. [2020-08-18 19:16:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-08-18 19:16:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1163 transitions. [2020-08-18 19:16:36,109 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1163 transitions. Word has length 98 [2020-08-18 19:16:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:36,110 INFO L479 AbstractCegarLoop]: Abstraction has 1007 states and 1163 transitions. [2020-08-18 19:16:36,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 19:16:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1163 transitions. [2020-08-18 19:16:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 19:16:36,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:36,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:36,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:16:36,123 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:36,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:36,124 INFO L82 PathProgramCache]: Analyzing trace with hash 555633972, now seen corresponding path program 1 times [2020-08-18 19:16:36,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:36,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544086635] [2020-08-18 19:16:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 19:16:36,236 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 19:16:36,236 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:16:36,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:16:36,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:16:36 BoogieIcfgContainer [2020-08-18 19:16:36,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:16:36,316 INFO L168 Benchmark]: Toolchain (without parser) took 39426.85 ms. Allocated memory was 147.8 MB in the beginning and 696.8 MB in the end (delta: 548.9 MB). Free memory was 103.0 MB in the beginning and 475.2 MB in the end (delta: -372.2 MB). Peak memory consumption was 176.7 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,321 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.67 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 174.5 MB in the end (delta: -71.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,326 INFO L168 Benchmark]: Boogie Preprocessor took 128.45 ms. Allocated memory is still 205.0 MB. Free memory was 174.5 MB in the beginning and 168.3 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,327 INFO L168 Benchmark]: RCFGBuilder took 1221.51 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 168.3 MB in the beginning and 193.5 MB in the end (delta: -25.3 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,328 INFO L168 Benchmark]: TraceAbstraction took 37450.37 ms. Allocated memory was 235.4 MB in the beginning and 696.8 MB in the end (delta: 461.4 MB). Free memory was 193.5 MB in the beginning and 475.2 MB in the end (delta: -281.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,333 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 619.67 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 174.5 MB in the end (delta: -71.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.45 ms. Allocated memory is still 205.0 MB. Free memory was 174.5 MB in the beginning and 168.3 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1221.51 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 168.3 MB in the beginning and 193.5 MB in the end (delta: -25.3 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37450.37 ms. Allocated memory was 235.4 MB in the beginning and 696.8 MB in the end (delta: 461.4 MB). Free memory was 193.5 MB in the beginning and 475.2 MB in the end (delta: -281.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; [L924] int retValue_acc ; [L925] int tmp ; [L929] FCALL select_helpers() [L930] FCALL select_features() [L931] CALL, EXPR valid_product() [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] return (retValue_acc); [L931] RET, EXPR valid_product() [L931] tmp = valid_product() [L933] COND TRUE \read(tmp) [L935] FCALL setup() [L936] CALL runTest() [L918] CALL test() [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) [L443] CALL waterRise() [L711] COND TRUE waterLevel < 2 [L712] waterLevel = waterLevel + 1 [L443] RET waterRise() [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND FALSE !(\read(pumpRunning)) [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND TRUE ! pumpRunning [L540] CALL, EXPR isHighWaterLevel() [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; [L656] CALL, EXPR isHighWaterSensorDry() [L773] int retValue_acc ; [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); [L656] RET, EXPR isHighWaterSensorDry() [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); [L540] RET, EXPR isHighWaterLevel() [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) [L544] CALL activatePump() [L569] int tmp ; [L573] CALL, EXPR isMethaneAlarm() [L594] int retValue_acc ; [L598] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L598] RET, EXPR isMethaneLevelCritical() [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); [L573] RET, EXPR isMethaneAlarm() [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) [L579] CALL activatePump__wrappee__highWaterSensor() [L563] pumpRunning = 1 [L579] RET activatePump__wrappee__highWaterSensor() [L544] RET activatePump() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) [L521] RET __utac_acc__Specification1_spec__1() [L478] RET timeShift() [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) [L453] CALL changeMethaneLevel() [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 [L453] RET changeMethaneLevel() [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND TRUE \read(pumpRunning) [L508] CALL lowerWaterLevel() [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 [L508] RET lowerWaterLevel() [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND FALSE !(! pumpRunning) [L553] FCALL processEnvironment__wrappee__base() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) [L797] CALL, EXPR isPumpRunning() [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); [L797] RET, EXPR isPumpRunning() [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) [L801] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 31.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1086 SDtfs, 2271 SDslu, 1554 SDs, 0 SdLazy, 7793 SolverSat, 1524 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1311occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1723 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 777 NumberOfCodeBlocks, 777 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 634 ConstructedInterpolants, 0 QuantifiedInterpolants, 196729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...