/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:25:56,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:25:56,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:25:56,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:25:56,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:25:56,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:25:56,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:25:56,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:25:56,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:25:56,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:25:56,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:25:56,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:25:56,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:25:56,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:25:56,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:25:56,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:25:56,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:25:56,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:25:56,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:25:56,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:25:56,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:25:56,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:25:56,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:25:56,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:25:56,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:25:56,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:25:56,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:25:56,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:25:56,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:25:56,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:25:56,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:25:56,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:25:56,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:25:56,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:25:56,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:25:56,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:25:56,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:25:56,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:25:56,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:25:56,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:25:56,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:25:56,905 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 00:25:56,953 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:25:56,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:25:56,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:25:56,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:25:56,955 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:25:56,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:25:56,956 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:25:56,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:25:56,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:25:56,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:25:56,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:25:56,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:25:56,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:25:56,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:25:56,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:25:56,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:25:56,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:25:56,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:25:56,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:25:56,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:25:56,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:25:56,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:25:56,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:25:56,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:25:56,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:25:56,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:25:56,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:25:56,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:25:56,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:25:56,962 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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:25:57,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:25:57,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:25:57,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:25:57,298 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:25:57,298 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:25:57,299 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-08-22 00:25:57,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02ffdebfe/0af25afad43a4e8c99b1f50672f3e203/FLAG9a8d5a0a1 [2020-08-22 00:25:58,005 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:25:58,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-08-22 00:25:58,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02ffdebfe/0af25afad43a4e8c99b1f50672f3e203/FLAG9a8d5a0a1 [2020-08-22 00:25:58,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02ffdebfe/0af25afad43a4e8c99b1f50672f3e203 [2020-08-22 00:25:58,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:25:58,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:25:58,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:25:58,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:25:58,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:25:58,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:25:58" (1/1) ... [2020-08-22 00:25:58,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a91d473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58, skipping insertion in model container [2020-08-22 00:25:58,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:25:58" (1/1) ... [2020-08-22 00:25:58,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:25:58,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:25:58,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:25:58,832 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:25:58,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:25:58,944 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:25:58,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58 WrapperNode [2020-08-22 00:25:58,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:25:58,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:25:58,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:25:58,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:25:58,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58" (1/1) ... [2020-08-22 00:25:58,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58" (1/1) ... [2020-08-22 00:25:58,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58" (1/1) ... [2020-08-22 00:25:58,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58" (1/1) ... [2020-08-22 00:25:59,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58" (1/1) ... [2020-08-22 00:25:59,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58" (1/1) ... [2020-08-22 00:25:59,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58" (1/1) ... [2020-08-22 00:25:59,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:25:59,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:25:59,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:25:59,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:25:59,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58" (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 00:25:59,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:25:59,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:25:59,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:25:59,126 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:25:59,126 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:25:59,126 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:25:59,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:25:59,127 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:25:59,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:25:59,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 00:25:59,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 00:25:59,128 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:25:59,128 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:25:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 00:25:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:25:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:25:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:25:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:25:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:25:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:25:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 00:25:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 00:25:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:25:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:25:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:25:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:25:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:25:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:25:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:25:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:25:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:25:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:25:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:25:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:25:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:25:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:25:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:25:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:25:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:25:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:25:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:25:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:25:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:25:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:25:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:25:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:25:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:25:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:25:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 00:25:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:25:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:25:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:25:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 00:25:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:25:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:25:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:25:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:25:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 00:25:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:25:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:25:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 00:25:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 00:25:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:25:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:25:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:25:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:25:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:25:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:25:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:25:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:25:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:25:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:25:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:25:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:25:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:25:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:25:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:25:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:25:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:25:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:25:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:25:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:25:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:25:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:25:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:25:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:25:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:25:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:25:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:25:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:25:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:25:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:26:00,214 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:26:00,215 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:26:00,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:26:00 BoogieIcfgContainer [2020-08-22 00:26:00,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:26:00,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:26:00,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:26:00,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:26:00,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:25:58" (1/3) ... [2020-08-22 00:26:00,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa29969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:26:00, skipping insertion in model container [2020-08-22 00:26:00,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:58" (2/3) ... [2020-08-22 00:26:00,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa29969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:26:00, skipping insertion in model container [2020-08-22 00:26:00,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:26:00" (3/3) ... [2020-08-22 00:26:00,234 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product23.cil.c [2020-08-22 00:26:00,245 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:26:00,253 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:26:00,264 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:26:00,284 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:26:00,285 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:26:00,285 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:26:00,285 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:26:00,285 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:26:00,285 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:26:00,285 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:26:00,286 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:26:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-22 00:26:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:26:00,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:00,319 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 00:26:00,319 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:00,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1512575049, now seen corresponding path program 1 times [2020-08-22 00:26:00,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:00,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202415495] [2020-08-22 00:26:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:00,925 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:00,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:01,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:01,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:26:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:01,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:26:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:01,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:26:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:01,073 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 00:26:01,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202415495] [2020-08-22 00:26:01,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:01,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:26:01,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639469475] [2020-08-22 00:26:01,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:26:01,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:01,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:26:01,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:26:01,104 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-22 00:26:02,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:02,256 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2020-08-22 00:26:02,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:26:02,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 00:26:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:02,274 INFO L225 Difference]: With dead ends: 305 [2020-08-22 00:26:02,275 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 00:26:02,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:26:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 00:26:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-08-22 00:26:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-22 00:26:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-08-22 00:26:02,403 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 52 [2020-08-22 00:26:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:02,403 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-08-22 00:26:02,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:26:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-08-22 00:26:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 00:26:02,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:02,408 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 00:26:02,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:26:02,409 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash -298039851, now seen corresponding path program 1 times [2020-08-22 00:26:02,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:02,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703603661] [2020-08-22 00:26:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:02,751 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:02,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:02,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:02,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:02,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:02,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:02,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:26:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:26:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:26:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:02,796 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 00:26:02,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703603661] [2020-08-22 00:26:02,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:02,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:26:02,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433338642] [2020-08-22 00:26:02,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:26:02,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:02,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:26:02,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:26:02,800 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 4 states. [2020-08-22 00:26:03,205 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:04,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:04,093 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-08-22 00:26:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:26:04,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 00:26:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:04,102 INFO L225 Difference]: With dead ends: 232 [2020-08-22 00:26:04,102 INFO L226 Difference]: Without dead ends: 149 [2020-08-22 00:26:04,107 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 00:26:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-22 00:26:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 122. [2020-08-22 00:26:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-22 00:26:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2020-08-22 00:26:04,157 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 53 [2020-08-22 00:26:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:04,157 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2020-08-22 00:26:04,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:26:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2020-08-22 00:26:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 00:26:04,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:04,170 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] [2020-08-22 00:26:04,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:26:04,171 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:04,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1680590552, now seen corresponding path program 1 times [2020-08-22 00:26:04,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:04,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321400568] [2020-08-22 00:26:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:04,590 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:04,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:04,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:04,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:04,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:26:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:26:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:04,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 00:26:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:04,680 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 00:26:04,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321400568] [2020-08-22 00:26:04,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:04,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:26:04,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844643863] [2020-08-22 00:26:04,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:26:04,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:04,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:26:04,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:26:04,689 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 8 states. [2020-08-22 00:26:05,057 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:05,401 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:05,659 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:05,891 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:06,634 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:08,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:08,525 INFO L93 Difference]: Finished difference Result 424 states and 531 transitions. [2020-08-22 00:26:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:26:08,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 00:26:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:08,538 INFO L225 Difference]: With dead ends: 424 [2020-08-22 00:26:08,538 INFO L226 Difference]: Without dead ends: 326 [2020-08-22 00:26:08,539 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 00:26:08,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-22 00:26:08,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-22 00:26:08,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-22 00:26:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 327 transitions. [2020-08-22 00:26:08,611 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 327 transitions. Word has length 57 [2020-08-22 00:26:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:08,611 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 327 transitions. [2020-08-22 00:26:08,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:26:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 327 transitions. [2020-08-22 00:26:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 00:26:08,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:08,614 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] [2020-08-22 00:26:08,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:26:08,614 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:08,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1676229378, now seen corresponding path program 1 times [2020-08-22 00:26:08,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:08,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585387750] [2020-08-22 00:26:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,919 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:26:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:26:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 00:26:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 00:26:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:09,008 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 00:26:09,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585387750] [2020-08-22 00:26:09,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:09,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:26:09,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641102307] [2020-08-22 00:26:09,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:26:09,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:09,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:26:09,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:26:09,011 INFO L87 Difference]: Start difference. First operand 268 states and 327 transitions. Second operand 8 states. [2020-08-22 00:26:09,351 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:10,667 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:11,013 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:11,285 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:11,582 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:12,262 INFO L93 Difference]: Finished difference Result 824 states and 1085 transitions. [2020-08-22 00:26:12,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:26:12,262 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 00:26:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:12,271 INFO L225 Difference]: With dead ends: 824 [2020-08-22 00:26:12,271 INFO L226 Difference]: Without dead ends: 580 [2020-08-22 00:26:12,276 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 [2020-08-22 00:26:12,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-08-22 00:26:12,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 513. [2020-08-22 00:26:12,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-22 00:26:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 641 transitions. [2020-08-22 00:26:12,399 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 641 transitions. Word has length 63 [2020-08-22 00:26:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:12,400 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 641 transitions. [2020-08-22 00:26:12,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:26:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 641 transitions. [2020-08-22 00:26:12,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 00:26:12,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:12,403 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] [2020-08-22 00:26:12,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:26:12,403 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:12,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:12,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1477650020, now seen corresponding path program 1 times [2020-08-22 00:26:12,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:12,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770804521] [2020-08-22 00:26:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:26:12,463 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:26:12,464 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:26:12,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:26:12,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:26:12 BoogieIcfgContainer [2020-08-22 00:26:12,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:26:12,491 INFO L168 Benchmark]: Toolchain (without parser) took 14183.72 ms. Allocated memory was 140.5 MB in the beginning and 477.1 MB in the end (delta: 336.6 MB). Free memory was 102.8 MB in the beginning and 175.1 MB in the end (delta: -72.3 MB). Peak memory consumption was 264.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:12,492 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:26:12,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.06 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 168.1 MB in the end (delta: -65.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:12,494 INFO L168 Benchmark]: Boogie Preprocessor took 115.14 ms. Allocated memory is still 203.4 MB. Free memory was 168.1 MB in the beginning and 163.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:12,495 INFO L168 Benchmark]: RCFGBuilder took 1163.30 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 163.5 MB in the beginning and 191.5 MB in the end (delta: -28.1 MB). Peak memory consumption was 77.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:12,496 INFO L168 Benchmark]: TraceAbstraction took 12263.16 ms. Allocated memory was 235.9 MB in the beginning and 477.1 MB in the end (delta: 241.2 MB). Free memory was 190.1 MB in the beginning and 175.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 256.2 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:12,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.06 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 168.1 MB in the end (delta: -65.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.14 ms. Allocated memory is still 203.4 MB. Free memory was 168.1 MB in the beginning and 163.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1163.30 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 163.5 MB in the beginning and 191.5 MB in the end (delta: -28.1 MB). Peak memory consumption was 77.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12263.16 ms. Allocated memory was 235.9 MB in the beginning and 477.1 MB in the end (delta: 241.2 MB). Free memory was 190.1 MB in the beginning and 175.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 256.2 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: 12.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 495 SDtfs, 801 SDslu, 347 SDs, 0 SdLazy, 1915 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s 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, 1.6s 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...