/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:05:59,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:05:59,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:05:59,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:05:59,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:05:59,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:05:59,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:05:59,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:05:59,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:05:59,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:05:59,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:05:59,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:05:59,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:05:59,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:05:59,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:05:59,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:05:59,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:05:59,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:05:59,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:05:59,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:05:59,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:05:59,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:05:59,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:05:59,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:05:59,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:05:59,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:05:59,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:05:59,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:05:59,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:05:59,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:05:59,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:05:59,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:05:59,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:05:59,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:05:59,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:05:59,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:05:59,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:05:59,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:05:59,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:05:59,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:05:59,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:05:59,607 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 [2020-08-22 06:05:59,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:05:59,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:05:59,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:05:59,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:05:59,655 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:05:59,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:05:59,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:05:59,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:05:59,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:05:59,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:05:59,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:05:59,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:05:59,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:05:59,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:05:59,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:05:59,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:05:59,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:05:59,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:05:59,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:05:59,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:05:59,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:05:59,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:05:59,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:05:59,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:05:59,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:05:59,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:05:59,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:05:59,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:05:59,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:05:59,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:05:59,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:06:00,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:06:00,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:06:00,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:06:00,018 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:06:00,019 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-08-22 06:06:00,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31de2a360/cae4ca2661254c738146da058d21a246/FLAGea710b8ef [2020-08-22 06:06:00,555 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:06:00,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-08-22 06:06:00,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31de2a360/cae4ca2661254c738146da058d21a246/FLAGea710b8ef [2020-08-22 06:06:00,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31de2a360/cae4ca2661254c738146da058d21a246 [2020-08-22 06:06:00,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:06:00,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:06:00,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:06:00,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:06:00,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:06:00,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:06:00" (1/1) ... [2020-08-22 06:06:00,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:00, skipping insertion in model container [2020-08-22 06:06:00,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:06:00" (1/1) ... [2020-08-22 06:06:00,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:06:01,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:06:01,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:06:01,594 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:06:01,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:06:01,709 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:06:01,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:01 WrapperNode [2020-08-22 06:06:01,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:06:01,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:06:01,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:06:01,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:06:01,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:01" (1/1) ... [2020-08-22 06:06:01,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:01" (1/1) ... [2020-08-22 06:06:01,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:01" (1/1) ... [2020-08-22 06:06:01,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:01" (1/1) ... [2020-08-22 06:06:01,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:01" (1/1) ... [2020-08-22 06:06:01,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:01" (1/1) ... [2020-08-22 06:06:01,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:01" (1/1) ... [2020-08-22 06:06:01,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:06:01,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:06:01,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:06:01,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:06:01,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:01" (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 [2020-08-22 06:06:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:06:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:06:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 06:06:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 06:06:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 06:06:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 06:06:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 06:06:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 06:06:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 06:06:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 06:06:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 06:06:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 06:06:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 06:06:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 06:06:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 06:06:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 06:06:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 06:06:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 06:06:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 06:06:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 06:06:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 06:06:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 06:06:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 06:06:01,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:06:01,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 06:06:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 06:06:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 06:06:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 06:06:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 06:06:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 06:06:01,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 06:06:01,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 06:06:01,889 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 06:06:01,889 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 06:06:01,890 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 06:06:01,890 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 06:06:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:06:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:06:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 06:06:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 06:06:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 06:06:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 06:06:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 06:06:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 06:06:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 06:06:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:06:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 06:06:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:06:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 06:06:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 06:06:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:06:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 06:06:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:06:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 06:06:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 06:06:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:06:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 06:06:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 06:06:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:06:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 06:06:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 06:06:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 06:06:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 06:06:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 06:06:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 06:06:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 06:06:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 06:06:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 06:06:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 06:06:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 06:06:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 06:06:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 06:06:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 06:06:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:06:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 06:06:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 06:06:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 06:06:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 06:06:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 06:06:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 06:06:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 06:06:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 06:06:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 06:06:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:06:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 06:06:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:06:02,844 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:06:02,845 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 06:06:02,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:06:02 BoogieIcfgContainer [2020-08-22 06:06:02,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:06:02,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:06:02,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:06:02,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:06:02,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:06:00" (1/3) ... [2020-08-22 06:06:02,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6359929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:06:02, skipping insertion in model container [2020-08-22 06:06:02,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:01" (2/3) ... [2020-08-22 06:06:02,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6359929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:06:02, skipping insertion in model container [2020-08-22 06:06:02,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:06:02" (3/3) ... [2020-08-22 06:06:02,865 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product04.cil.c [2020-08-22 06:06:02,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:06:02,882 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:06:02,893 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:06:02,919 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:06:02,919 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:06:02,919 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:06:02,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:06:02,919 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:06:02,919 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:06:02,920 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:06:02,920 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:06:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-08-22 06:06:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 06:06:02,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:02,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:02,955 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:02,961 INFO L82 PathProgramCache]: Analyzing trace with hash -403347124, now seen corresponding path program 1 times [2020-08-22 06:06:02,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:02,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357610475] [2020-08-22 06:06:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:03,679 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:03,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:03,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:03,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:03,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:06:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:06:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:06:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:03,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357610475] [2020-08-22 06:06:03,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:03,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:06:03,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829658171] [2020-08-22 06:06:03,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:06:03,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:03,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:06:03,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:06:03,795 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 3 states. [2020-08-22 06:06:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:04,871 INFO L93 Difference]: Finished difference Result 240 states and 317 transitions. [2020-08-22 06:06:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:06:04,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 06:06:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:04,890 INFO L225 Difference]: With dead ends: 240 [2020-08-22 06:06:04,890 INFO L226 Difference]: Without dead ends: 131 [2020-08-22 06:06:04,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:06:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-22 06:06:04,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100. [2020-08-22 06:06:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 06:06:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-22 06:06:04,979 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 52 [2020-08-22 06:06:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:04,980 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-22 06:06:04,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:06:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-22 06:06:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 06:06:04,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:04,984 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] [2020-08-22 06:06:04,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:06:04,985 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:04,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:04,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1720191538, now seen corresponding path program 1 times [2020-08-22 06:06:04,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:04,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102046877] [2020-08-22 06:06:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:05,297 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:05,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:05,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:05,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:05,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:06:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:05,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:06:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:06:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:05,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102046877] [2020-08-22 06:06:05,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:05,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:06:05,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600182111] [2020-08-22 06:06:05,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:06:05,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:05,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:06:05,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:06:05,376 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 4 states. [2020-08-22 06:06:05,759 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:06:06,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:06,389 INFO L93 Difference]: Finished difference Result 160 states and 194 transitions. [2020-08-22 06:06:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:06:06,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 06:06:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:06,394 INFO L225 Difference]: With dead ends: 160 [2020-08-22 06:06:06,395 INFO L226 Difference]: Without dead ends: 115 [2020-08-22 06:06:06,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:06:06,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-22 06:06:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91. [2020-08-22 06:06:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-22 06:06:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-08-22 06:06:06,448 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 53 [2020-08-22 06:06:06,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:06,449 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-08-22 06:06:06,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:06:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-08-22 06:06:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 06:06:06,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:06,461 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] [2020-08-22 06:06:06,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:06:06,461 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:06,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:06,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1933430427, now seen corresponding path program 1 times [2020-08-22 06:06:06,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:06,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306052925] [2020-08-22 06:06:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:06,817 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:06,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:06,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:06,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:06,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:06,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:06:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:06:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:06,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 06:06:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:06,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306052925] [2020-08-22 06:06:06,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:06,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:06:06,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959494350] [2020-08-22 06:06:06,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:06:06,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:06,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:06:06,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:06:06,963 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 8 states. [2020-08-22 06:06:07,286 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:07,612 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:07,878 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:08,119 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:08,892 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:06:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:10,125 INFO L93 Difference]: Finished difference Result 326 states and 401 transitions. [2020-08-22 06:06:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:06:10,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 06:06:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:10,129 INFO L225 Difference]: With dead ends: 326 [2020-08-22 06:06:10,130 INFO L226 Difference]: Without dead ends: 259 [2020-08-22 06:06:10,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:06:10,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-22 06:06:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 190. [2020-08-22 06:06:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-22 06:06:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2020-08-22 06:06:10,193 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 58 [2020-08-22 06:06:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:10,193 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2020-08-22 06:06:10,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:06:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2020-08-22 06:06:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 06:06:10,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:10,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:10,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:06:10,196 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1944220283, now seen corresponding path program 1 times [2020-08-22 06:06:10,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:10,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175190383] [2020-08-22 06:06:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:10,511 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:10,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:10,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:10,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:10,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:06:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:06:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 06:06:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:10,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 06:06:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:10,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175190383] [2020-08-22 06:06:10,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:10,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 06:06:10,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125572087] [2020-08-22 06:06:10,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:06:10,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:10,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:06:10,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:06:10,608 INFO L87 Difference]: Start difference. First operand 190 states and 225 transitions. Second operand 7 states. [2020-08-22 06:06:10,943 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:11,940 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:12,212 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:12,450 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:12,702 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:12,983 INFO L93 Difference]: Finished difference Result 537 states and 682 transitions. [2020-08-22 06:06:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 06:06:12,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-08-22 06:06:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:12,988 INFO L225 Difference]: With dead ends: 537 [2020-08-22 06:06:12,988 INFO L226 Difference]: Without dead ends: 371 [2020-08-22 06:06:12,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:06:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-08-22 06:06:13,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 349. [2020-08-22 06:06:13,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-08-22 06:06:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 425 transitions. [2020-08-22 06:06:13,069 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 425 transitions. Word has length 61 [2020-08-22 06:06:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:13,070 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 425 transitions. [2020-08-22 06:06:13,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:06:13,070 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 425 transitions. [2020-08-22 06:06:13,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 06:06:13,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:13,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:13,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:06:13,073 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:13,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1974146389, now seen corresponding path program 1 times [2020-08-22 06:06:13,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:13,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595331558] [2020-08-22 06:06:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,384 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:13,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 06:06:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:06:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:06:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 06:06:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 06:06:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:13,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595331558] [2020-08-22 06:06:13,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:13,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:06:13,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793973608] [2020-08-22 06:06:13,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:06:13,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:13,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:06:13,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:06:13,450 INFO L87 Difference]: Start difference. First operand 349 states and 425 transitions. Second operand 5 states. [2020-08-22 06:06:13,738 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:14,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:14,361 INFO L93 Difference]: Finished difference Result 642 states and 802 transitions. [2020-08-22 06:06:14,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:06:14,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-08-22 06:06:14,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:14,365 INFO L225 Difference]: With dead ends: 642 [2020-08-22 06:06:14,365 INFO L226 Difference]: Without dead ends: 317 [2020-08-22 06:06:14,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:06:14,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-08-22 06:06:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303. [2020-08-22 06:06:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-22 06:06:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 354 transitions. [2020-08-22 06:06:14,437 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 354 transitions. Word has length 65 [2020-08-22 06:06:14,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:14,438 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 354 transitions. [2020-08-22 06:06:14,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:06:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 354 transitions. [2020-08-22 06:06:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 06:06:14,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:14,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:14,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:06:14,440 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:14,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1832330753, now seen corresponding path program 1 times [2020-08-22 06:06:14,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:14,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881900218] [2020-08-22 06:06:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:06:14,502 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:06:14,502 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:06:14,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:06:14,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:06:14 BoogieIcfgContainer [2020-08-22 06:06:14,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:06:14,534 INFO L168 Benchmark]: Toolchain (without parser) took 13577.89 ms. Allocated memory was 146.8 MB in the beginning and 389.5 MB in the end (delta: 242.7 MB). Free memory was 102.1 MB in the beginning and 168.1 MB in the end (delta: -66.0 MB). Peak memory consumption was 176.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:14,535 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 06:06:14,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.45 ms. Allocated memory was 146.8 MB in the beginning and 208.1 MB in the end (delta: 61.3 MB). Free memory was 101.7 MB in the beginning and 176.5 MB in the end (delta: -74.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:14,536 INFO L168 Benchmark]: Boogie Preprocessor took 104.88 ms. Allocated memory is still 208.1 MB. Free memory was 176.5 MB in the beginning and 172.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:14,537 INFO L168 Benchmark]: RCFGBuilder took 1039.05 ms. Allocated memory was 208.1 MB in the beginning and 234.9 MB in the end (delta: 26.7 MB). Free memory was 172.4 MB in the beginning and 200.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:14,538 INFO L168 Benchmark]: TraceAbstraction took 11675.16 ms. Allocated memory was 234.9 MB in the beginning and 389.5 MB in the end (delta: 154.7 MB). Free memory was 200.3 MB in the beginning and 168.1 MB in the end (delta: 32.2 MB). Peak memory consumption was 186.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:14,542 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 752.45 ms. Allocated memory was 146.8 MB in the beginning and 208.1 MB in the end (delta: 61.3 MB). Free memory was 101.7 MB in the beginning and 176.5 MB in the end (delta: -74.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.88 ms. Allocated memory is still 208.1 MB. Free memory was 176.5 MB in the beginning and 172.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1039.05 ms. Allocated memory was 208.1 MB in the beginning and 234.9 MB in the end (delta: 26.7 MB). Free memory was 172.4 MB in the beginning and 200.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11675.16 ms. Allocated memory was 234.9 MB in the beginning and 389.5 MB in the end (delta: 154.7 MB). Free memory was 200.3 MB in the beginning and 168.1 MB in the end (delta: 32.2 MB). Peak memory consumption was 186.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 633]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L46] int waterLevel = 1; [L47] int methaneLevelCritical = 0; [L295] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L530] int cleanupTimeShifts = 4; [L677] int pumpRunning = 0; [L678] int systemActive = 1; [L606] int retValue_acc ; [L607] int tmp ; [L611] FCALL select_helpers() [L612] FCALL select_features() [L613] CALL, EXPR valid_product() [L521] int retValue_acc ; [L524] retValue_acc = 1 [L525] return (retValue_acc); [L613] RET, EXPR valid_product() [L613] tmp = valid_product() [L615] COND TRUE \read(tmp) [L617] FCALL setup() [L618] CALL runTest() [L600] CALL test() [L808] int splverifierCounter ; [L809] int tmp ; [L810] int tmp___0 ; [L811] int tmp___1 ; [L812] int tmp___2 ; [L815] splverifierCounter = 0 [L817] COND TRUE 1 [L819] COND TRUE splverifierCounter < 4 [L825] tmp = __VERIFIER_nondet_int() [L827] COND TRUE \read(tmp) [L829] CALL waterRise() [L64] COND TRUE waterLevel < 2 [L65] waterLevel = waterLevel + 1 [L829] RET waterRise() [L835] tmp___0 = __VERIFIER_nondet_int() [L837] COND FALSE !(\read(tmp___0)) [L845] tmp___2 = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp___2)) [L853] tmp___1 = __VERIFIER_nondet_int() [L855] COND FALSE !(\read(tmp___1)) [L864] CALL timeShift() [L684] COND FALSE !(\read(pumpRunning)) [L691] COND TRUE \read(systemActive) [L693] FCALL processEnvironment() [L699] CALL __utac_acc__Specification3_spec__1() [L640] int tmp ; [L641] int tmp___0 ; [L642] int tmp___1 ; [L646] CALL, EXPR isMethaneLevelCritical() [L85] int retValue_acc ; [L88] retValue_acc = methaneLevelCritical [L89] return (retValue_acc); [L646] RET, EXPR isMethaneLevelCritical() [L646] tmp = isMethaneLevelCritical() [L648] COND FALSE !(\read(tmp)) [L652] CALL, EXPR getWaterLevel() [L117] int retValue_acc ; [L120] retValue_acc = waterLevel [L121] return (retValue_acc); [L652] RET, EXPR getWaterLevel() [L652] tmp___0 = getWaterLevel() [L654] COND TRUE tmp___0 == 2 [L656] CALL, EXPR isPumpRunning() [L739] int retValue_acc ; [L742] retValue_acc = pumpRunning [L743] return (retValue_acc); [L656] RET, EXPR isPumpRunning() [L656] tmp___1 = isPumpRunning() [L658] COND FALSE !(\read(tmp___1)) [L662] CALL __automaton_fail() [L633] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 439 SDtfs, 641 SDslu, 330 SDs, 0 SdLazy, 1334 SolverSat, 395 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 160 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 79940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...