/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:13:00,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:13:00,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:13:00,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:13:00,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:13:00,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:13:00,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:13:00,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:13:00,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:13:00,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:13:00,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:13:00,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:13:00,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:13:00,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:13:00,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:13:00,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:13:00,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:13:00,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:13:00,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:13:00,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:13:00,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:13:00,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:13:00,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:13:00,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:13:00,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:13:00,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:13:00,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:13:00,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:13:00,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:13:00,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:13:00,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:13:00,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:13:00,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:13:00,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:13:00,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:13:00,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:13:00,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:13:00,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:13:00,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:13:00,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:13:00,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:13:00,859 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 [2020-08-19 04:13:00,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:13:00,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:13:00,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:13:00,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:13:00,883 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:13:00,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:13:00,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:13:00,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:13:00,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:13:00,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:13:00,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:13:00,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:13:00,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:13:00,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:13:00,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:13:00,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:13:00,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:13:00,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:13:00,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:13:00,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:13:00,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:13:00,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:13:00,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:13:00,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:13:00,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:13:00,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:13:00,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:13:00,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:13:00,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:13:00,888 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:13:01,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:13:01,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:13:01,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:13:01,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:13:01,187 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:13:01,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-08-19 04:13:01,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79daf7266/edd1753b59244d8590e970672a098bbd/FLAG21a77143d [2020-08-19 04:13:01,717 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:13:01,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-08-19 04:13:01,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79daf7266/edd1753b59244d8590e970672a098bbd/FLAG21a77143d [2020-08-19 04:13:02,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79daf7266/edd1753b59244d8590e970672a098bbd [2020-08-19 04:13:02,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:13:02,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:13:02,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:13:02,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:13:02,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:13:02,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02, skipping insertion in model container [2020-08-19 04:13:02,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:13:02,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:13:02,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:13:02,733 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:13:02,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:13:02,850 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:13:02,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02 WrapperNode [2020-08-19 04:13:02,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:13:02,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:13:02,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:13:02,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:13:02,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:13:02,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:13:02,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:13:02,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:13:02,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (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 [2020-08-19 04:13:03,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:13:03,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:13:03,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:13:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:13:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:13:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:13:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:13:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:13:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:13:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:13:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 04:13:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:13:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:13:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:13:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:13:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:13:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:13:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:13:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:13:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:13:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:13:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 04:13:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:13:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:13:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:13:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:13:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:13:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:13:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:13:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:13:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:13:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:13:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:13:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:13:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:13:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:13:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:13:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:13:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:13:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:13:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:13:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:13:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:13:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:13:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:13:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:13:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:13:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:13:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:13:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:13:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:13:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:13:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 04:13:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:13:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:13:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:13:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:13:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 04:13:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:13:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:13:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:13:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:13:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:13:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:13:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:13:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:13:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:13:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:13:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:13:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:13:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:13:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:13:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:13:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:13:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:13:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:13:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:13:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:13:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:13:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:13:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:13:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:13:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:13:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:13:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:13:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:13:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:13:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:13:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:13:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:13:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:13:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:13:04,230 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:13:04,230 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:13:04,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:13:04 BoogieIcfgContainer [2020-08-19 04:13:04,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:13:04,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:13:04,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:13:04,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:13:04,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:13:02" (1/3) ... [2020-08-19 04:13:04,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413b311b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:13:04, skipping insertion in model container [2020-08-19 04:13:04,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (2/3) ... [2020-08-19 04:13:04,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413b311b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:13:04, skipping insertion in model container [2020-08-19 04:13:04,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:13:04" (3/3) ... [2020-08-19 04:13:04,244 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product23.cil.c [2020-08-19 04:13:04,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:13:04,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:13:04,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:13:04,304 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:13:04,304 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:13:04,304 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:13:04,304 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:13:04,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:13:04,305 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:13:04,305 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:13:04,305 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:13:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-19 04:13:04,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:13:04,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:04,339 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] [2020-08-19 04:13:04,340 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:04,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1512575049, now seen corresponding path program 1 times [2020-08-19 04:13:04,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:04,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077619563] [2020-08-19 04:13:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:05,059 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:05,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:05,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:05,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:05,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:05,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:13:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:05,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:13:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:05,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:13:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:05,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077619563] [2020-08-19 04:13:05,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:05,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:13:05,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375941583] [2020-08-19 04:13:05,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:13:05,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:05,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:13:05,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:13:05,251 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-19 04:13:06,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:06,475 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2020-08-19 04:13:06,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:13:06,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 04:13:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:06,492 INFO L225 Difference]: With dead ends: 305 [2020-08-19 04:13:06,492 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 04:13:06,497 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 [2020-08-19 04:13:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 04:13:06,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-08-19 04:13:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-19 04:13:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-08-19 04:13:06,587 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 52 [2020-08-19 04:13:06,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:06,588 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-08-19 04:13:06,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:13:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-08-19 04:13:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 04:13:06,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:06,593 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] [2020-08-19 04:13:06,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:13:06,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:06,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:06,594 INFO L82 PathProgramCache]: Analyzing trace with hash -298039851, now seen corresponding path program 1 times [2020-08-19 04:13:06,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:06,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879075612] [2020-08-19 04:13:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,922 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:13:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:13:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:13:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:06,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879075612] [2020-08-19 04:13:06,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:06,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:13:06,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36730363] [2020-08-19 04:13:06,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:13:06,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:06,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:13:06,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:13:06,986 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 4 states. [2020-08-19 04:13:07,443 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:08,314 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-08-19 04:13:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:13:08,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 04:13:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:08,318 INFO L225 Difference]: With dead ends: 232 [2020-08-19 04:13:08,318 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 04:13:08,320 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 [2020-08-19 04:13:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 04:13:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 122. [2020-08-19 04:13:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-19 04:13:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2020-08-19 04:13:08,361 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 53 [2020-08-19 04:13:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:08,362 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2020-08-19 04:13:08,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:13:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2020-08-19 04:13:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 04:13:08,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:08,365 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] [2020-08-19 04:13:08,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:13:08,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:08,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:08,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1680590552, now seen corresponding path program 1 times [2020-08-19 04:13:08,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:08,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340160571] [2020-08-19 04:13:08,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:08,706 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:08,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:08,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:08,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:08,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:13:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:08,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:13:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:08,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 04:13:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:08,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340160571] [2020-08-19 04:13:08,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:08,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:13:08,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103135211] [2020-08-19 04:13:08,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:13:08,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:13:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:13:08,815 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 8 states. [2020-08-19 04:13:09,180 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:09,508 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:09,789 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:10,024 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:10,761 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:12,668 INFO L93 Difference]: Finished difference Result 424 states and 531 transitions. [2020-08-19 04:13:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:13:12,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 04:13:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:12,679 INFO L225 Difference]: With dead ends: 424 [2020-08-19 04:13:12,679 INFO L226 Difference]: Without dead ends: 326 [2020-08-19 04:13:12,681 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 [2020-08-19 04:13:12,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-19 04:13:12,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-19 04:13:12,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-19 04:13:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 327 transitions. [2020-08-19 04:13:12,749 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 327 transitions. Word has length 57 [2020-08-19 04:13:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:12,750 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 327 transitions. [2020-08-19 04:13:12,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:13:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 327 transitions. [2020-08-19 04:13:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 04:13:12,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:12,754 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] [2020-08-19 04:13:12,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:13:12,754 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:12,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:12,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1676229378, now seen corresponding path program 1 times [2020-08-19 04:13:12,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:12,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295748721] [2020-08-19 04:13:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:13,048 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:13,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:13,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:13,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:13,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:13,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:13:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:13,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:13:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:13,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 04:13:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:13,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 04:13:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:13,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295748721] [2020-08-19 04:13:13,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:13,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:13:13,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819066026] [2020-08-19 04:13:13,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:13:13,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:13,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:13:13,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:13:13,180 INFO L87 Difference]: Start difference. First operand 268 states and 327 transitions. Second operand 8 states. [2020-08-19 04:13:13,564 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:14,902 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:15,249 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:15,501 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:15,772 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:16,505 INFO L93 Difference]: Finished difference Result 824 states and 1085 transitions. [2020-08-19 04:13:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 04:13:16,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 04:13:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:16,511 INFO L225 Difference]: With dead ends: 824 [2020-08-19 04:13:16,511 INFO L226 Difference]: Without dead ends: 580 [2020-08-19 04:13:16,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:13:16,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-08-19 04:13:16,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 513. [2020-08-19 04:13:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-19 04:13:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 641 transitions. [2020-08-19 04:13:16,643 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 641 transitions. Word has length 63 [2020-08-19 04:13:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:16,643 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 641 transitions. [2020-08-19 04:13:16,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:13:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 641 transitions. [2020-08-19 04:13:16,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 04:13:16,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:16,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:13:16,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:13:16,650 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:16,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:16,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1477650020, now seen corresponding path program 1 times [2020-08-19 04:13:16,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:16,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911513884] [2020-08-19 04:13:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:13:16,705 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:13:16,705 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:13:16,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:13:16,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:13:16 BoogieIcfgContainer [2020-08-19 04:13:16,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:13:16,734 INFO L168 Benchmark]: Toolchain (without parser) took 14643.44 ms. Allocated memory was 138.9 MB in the beginning and 482.9 MB in the end (delta: 343.9 MB). Free memory was 100.7 MB in the beginning and 282.2 MB in the end (delta: -181.5 MB). Peak memory consumption was 162.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:16,735 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:13:16,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.33 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.5 MB in the beginning and 168.5 MB in the end (delta: -68.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:16,737 INFO L168 Benchmark]: Boogie Preprocessor took 100.39 ms. Allocated memory is still 201.9 MB. Free memory was 168.5 MB in the beginning and 164.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:16,738 INFO L168 Benchmark]: RCFGBuilder took 1283.42 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 164.4 MB in the beginning and 194.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:16,739 INFO L168 Benchmark]: TraceAbstraction took 12495.12 ms. Allocated memory was 233.8 MB in the beginning and 482.9 MB in the end (delta: 249.0 MB). Free memory was 194.5 MB in the beginning and 282.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 161.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:16,742 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.33 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.5 MB in the beginning and 168.5 MB in the end (delta: -68.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.39 ms. Allocated memory is still 201.9 MB. Free memory was 168.5 MB in the beginning and 164.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1283.42 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 164.4 MB in the beginning and 194.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12495.12 ms. Allocated memory was 233.8 MB in the beginning and 482.9 MB in the end (delta: 249.0 MB). Free memory was 194.5 MB in the beginning and 282.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 161.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 541]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L177] int pumpRunning = 0; [L178] int systemActive = 1; [L438] int cleanupTimeShifts = 4; [L715] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L514] int retValue_acc ; [L515] int tmp ; [L519] FCALL select_helpers() [L520] FCALL select_features() [L521] CALL, EXPR valid_product() [L938] int retValue_acc ; [L941] retValue_acc = 1 [L942] return (retValue_acc); [L521] RET, EXPR valid_product() [L521] tmp = valid_product() [L523] COND TRUE \read(tmp) [L525] FCALL setup() [L526] CALL runTest() [L505] CALL test() [L372] int splverifierCounter ; [L373] int tmp ; [L374] int tmp___0 ; [L375] int tmp___1 ; [L376] int tmp___2 ; [L379] splverifierCounter = 0 [L381] COND TRUE 1 [L383] COND TRUE splverifierCounter < 4 [L389] tmp = __VERIFIER_nondet_int() [L391] COND TRUE \read(tmp) [L393] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L393] RET waterRise() [L399] tmp___0 = __VERIFIER_nondet_int() [L401] COND FALSE !(\read(tmp___0)) [L409] tmp___2 = __VERIFIER_nondet_int() [L411] COND FALSE !(\read(tmp___2)) [L415] tmp___1 = __VERIFIER_nondet_int() [L417] COND TRUE \read(tmp___1) [L419] CALL stopSystem() [L358] COND FALSE !(\read(pumpRunning)) [L365] systemActive = 0 [L419] RET stopSystem() [L426] CALL timeShift() [L184] COND FALSE !(\read(pumpRunning)) [L191] COND FALSE !(\read(systemActive)) [L199] CALL __utac_acc__Specification3_spec__1() [L139] int tmp ; [L140] int tmp___0 ; [L141] int tmp___1 ; [L145] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L145] RET, EXPR isMethaneLevelCritical() [L145] tmp = isMethaneLevelCritical() [L147] COND FALSE !(\read(tmp)) [L151] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L151] RET, EXPR getWaterLevel() [L151] tmp___0 = getWaterLevel() [L153] COND TRUE tmp___0 == 2 [L155] CALL, EXPR isPumpRunning() [L291] int retValue_acc ; [L294] retValue_acc = pumpRunning [L295] return (retValue_acc); [L155] RET, EXPR isPumpRunning() [L155] tmp___1 = isPumpRunning() [L157] COND FALSE !(\read(tmp___1)) [L161] CALL __automaton_fail() [L541] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 496 SDtfs, 801 SDslu, 348 SDs, 0 SdLazy, 1919 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred 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, 4 MinimizatonAttempts, 186 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 61524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...