/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:33:38,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:33:38,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:33:38,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:33:38,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:33:38,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:33:38,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:33:38,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:33:38,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:33:38,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:33:38,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:33:38,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:33:38,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:33:38,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:33:38,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:33:38,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:33:38,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:33:38,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:33:38,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:33:38,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:33:38,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:33:38,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:33:38,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:33:38,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:33:38,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:33:38,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:33:38,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:33:38,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:33:38,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:33:38,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:33:38,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:33:38,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:33:38,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:33:38,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:33:38,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:33:38,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:33:38,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:33:38,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:33:38,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:33:38,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:33:38,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:33:38,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:33:38,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:33:38,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:33:38,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:33:38,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:33:38,200 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:33:38,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:33:38,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:33:38,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:33:38,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:33:38,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:33:38,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:33:38,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:33:38,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:33:38,203 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:33:38,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:33:38,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:33:38,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:33:38,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:33:38,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:33:38,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:33:38,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:33:38,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:33:38,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:33:38,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:33:38,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:33:38,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:33:38,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:33:38,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:33:38,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:33:38,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:33:38,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:33:38,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:33:38,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:33:38,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:33:38,549 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:33:38,549 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-08-21 15:33:38,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97401ad71/97b0335a6781494182920afd8c6739e4/FLAG9fef5e53d [2020-08-21 15:33:39,147 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:33:39,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-08-21 15:33:39,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97401ad71/97b0335a6781494182920afd8c6739e4/FLAG9fef5e53d [2020-08-21 15:33:39,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97401ad71/97b0335a6781494182920afd8c6739e4 [2020-08-21 15:33:39,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:33:39,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:33:39,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:33:39,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:33:39,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:33:39,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:33:39" (1/1) ... [2020-08-21 15:33:39,498 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 21.08 03:33:39, skipping insertion in model container [2020-08-21 15:33:39,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:33:39" (1/1) ... [2020-08-21 15:33:39,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:33:39,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:33:39,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:33:39,956 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:33:40,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:33:40,107 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:33:40,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:40 WrapperNode [2020-08-21 15:33:40,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:33:40,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:33:40,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:33:40,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:33:40,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:40" (1/1) ... [2020-08-21 15:33:40,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:40" (1/1) ... [2020-08-21 15:33:40,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:40" (1/1) ... [2020-08-21 15:33:40,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:40" (1/1) ... [2020-08-21 15:33:40,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:40" (1/1) ... [2020-08-21 15:33:40,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:40" (1/1) ... [2020-08-21 15:33:40,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:40" (1/1) ... [2020-08-21 15:33:40,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:33:40,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:33:40,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:33:40,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:33:40,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:33:40,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:33:40,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:33:40,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:33:40,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:33:40,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:33:40,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:33:40,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:33:40,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:33:40,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:33:40,267 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:33:40,267 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:33:40,267 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 15:33:40,267 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:33:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:33:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:33:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:33:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:33:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:33:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 15:33:40,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:33:40,269 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:33:40,269 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:33:40,269 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:33:40,269 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:33:40,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:33:40,269 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:33:40,270 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:33:40,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 15:33:40,270 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:33:40,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:33:40,270 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:33:40,270 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:33:40,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:33:40,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 15:33:40,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:33:40,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:33:40,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:33:40,271 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:33:40,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:33:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:33:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:33:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:33:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:33:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:33:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:33:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:33:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:33:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:33:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:33:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:33:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:33:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:33:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:33:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:33:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:33:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:33:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:33:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:33:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:33:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:33:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:33:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 15:33:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:33:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:33:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:33:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:33:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:33:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 15:33:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:33:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:33:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 15:33:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 15:33:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:33:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:33:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:33:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:33:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:33:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:33:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:33:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:33:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:33:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:33:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:33:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:33:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:33:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:33:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:33:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:33:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:33:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:33:41,275 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:33:41,275 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:33:41,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:33:41 BoogieIcfgContainer [2020-08-21 15:33:41,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:33:41,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:33:41,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:33:41,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:33:41,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:33:39" (1/3) ... [2020-08-21 15:33:41,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64afc605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:33:41, skipping insertion in model container [2020-08-21 15:33:41,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:40" (2/3) ... [2020-08-21 15:33:41,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64afc605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:33:41, skipping insertion in model container [2020-08-21 15:33:41,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:33:41" (3/3) ... [2020-08-21 15:33:41,289 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-08-21 15:33:41,300 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:33:41,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:33:41,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:33:41,345 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:33:41,346 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:33:41,346 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:33:41,346 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:33:41,346 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:33:41,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:33:41,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:33:41,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:33:41,368 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-08-21 15:33:41,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 15:33:41,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:41,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:33:41,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:41,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:41,386 INFO L82 PathProgramCache]: Analyzing trace with hash -93036640, now seen corresponding path program 1 times [2020-08-21 15:33:41,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:41,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647640374] [2020-08-21 15:33:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:42,037 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:33:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:42,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:42,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:33:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:33:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:33:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:33:42,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647640374] [2020-08-21 15:33:42,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:33:42,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:33:42,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509432007] [2020-08-21 15:33:42,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:33:42,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:42,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:33:42,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:33:42,201 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-08-21 15:33:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:43,286 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2020-08-21 15:33:43,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:33:43,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 15:33:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:43,314 INFO L225 Difference]: With dead ends: 291 [2020-08-21 15:33:43,314 INFO L226 Difference]: Without dead ends: 157 [2020-08-21 15:33:43,321 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 [2020-08-21 15:33:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-21 15:33:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-08-21 15:33:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 15:33:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-08-21 15:33:43,426 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52 [2020-08-21 15:33:43,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:43,426 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-08-21 15:33:43,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:33:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-08-21 15:33:43,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 15:33:43,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:43,431 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] [2020-08-21 15:33:43,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:33:43,431 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:43,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1403357497, now seen corresponding path program 1 times [2020-08-21 15:33:43,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:43,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216911002] [2020-08-21 15:33:43,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:43,741 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:33:43,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:43,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:43,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:43,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:43,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:33:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:43,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:33:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:43,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:33:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:33:43,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216911002] [2020-08-21 15:33:43,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:33:43,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:33:43,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608632105] [2020-08-21 15:33:43,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:33:43,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:43,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:33:43,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:33:43,784 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states. [2020-08-21 15:33:44,170 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:33:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:44,903 INFO L93 Difference]: Finished difference Result 224 states and 275 transitions. [2020-08-21 15:33:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:33:44,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 15:33:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:44,908 INFO L225 Difference]: With dead ends: 224 [2020-08-21 15:33:44,908 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 15:33:44,910 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 [2020-08-21 15:33:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 15:33:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-21 15:33:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 15:33:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-21 15:33:44,949 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53 [2020-08-21 15:33:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:44,949 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-21 15:33:44,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:33:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-21 15:33:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 15:33:44,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:44,952 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] [2020-08-21 15:33:44,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:33:44,952 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:44,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1713517472, now seen corresponding path program 1 times [2020-08-21 15:33:44,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:44,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886805735] [2020-08-21 15:33:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:45,258 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:33:45,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:45,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:45,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:45,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:33:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:33:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:45,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 15:33:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:33:45,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886805735] [2020-08-21 15:33:45,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:33:45,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:33:45,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237306665] [2020-08-21 15:33:45,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:33:45,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:45,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:33:45,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:33:45,331 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 8 states. [2020-08-21 15:33:45,691 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:33:45,958 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:46,221 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:46,438 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:47,441 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2020-08-21 15:33:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:33:47,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 15:33:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:47,445 INFO L225 Difference]: With dead ends: 233 [2020-08-21 15:33:47,445 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 15:33:47,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:33:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 15:33:47,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-21 15:33:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 15:33:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-08-21 15:33:47,480 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57 [2020-08-21 15:33:47,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:47,481 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-08-21 15:33:47,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:33:47,481 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-08-21 15:33:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 15:33:47,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:47,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:33:47,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:33:47,484 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:47,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:47,484 INFO L82 PathProgramCache]: Analyzing trace with hash -949895556, now seen corresponding path program 1 times [2020-08-21 15:33:47,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:47,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164171921] [2020-08-21 15:33:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,760 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:33:47,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 15:33:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:33:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:33:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 15:33:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:33:47,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164171921] [2020-08-21 15:33:47,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:33:47,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:33:47,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371560021] [2020-08-21 15:33:47,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:33:47,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:47,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:33:47,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:33:47,866 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states. [2020-08-21 15:33:48,212 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:33:49,666 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:49,942 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:50,157 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:50,514 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:33:50,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:50,879 INFO L93 Difference]: Finished difference Result 348 states and 456 transitions. [2020-08-21 15:33:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 15:33:50,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-08-21 15:33:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:50,886 INFO L225 Difference]: With dead ends: 348 [2020-08-21 15:33:50,886 INFO L226 Difference]: Without dead ends: 256 [2020-08-21 15:33:50,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:33:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-21 15:33:50,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2020-08-21 15:33:50,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-08-21 15:33:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2020-08-21 15:33:50,952 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70 [2020-08-21 15:33:50,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:50,953 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2020-08-21 15:33:50,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:33:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2020-08-21 15:33:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 15:33:50,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:50,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:33:50,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:33:50,956 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:50,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:50,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1700935146, now seen corresponding path program 1 times [2020-08-21 15:33:50,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:50,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180080935] [2020-08-21 15:33:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:33:51,013 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:33:51,014 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:33:51,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:33:51,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:33:51 BoogieIcfgContainer [2020-08-21 15:33:51,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:33:51,041 INFO L168 Benchmark]: Toolchain (without parser) took 11550.87 ms. Allocated memory was 139.5 MB in the beginning and 430.4 MB in the end (delta: 291.0 MB). Free memory was 101.3 MB in the beginning and 344.2 MB in the end (delta: -242.9 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:33:51,042 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 15:33:51,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.38 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 168.8 MB in the end (delta: -67.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-21 15:33:51,043 INFO L168 Benchmark]: Boogie Preprocessor took 85.43 ms. Allocated memory is still 201.9 MB. Free memory was 168.8 MB in the beginning and 164.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-21 15:33:51,044 INFO L168 Benchmark]: RCFGBuilder took 1086.34 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 164.4 MB in the beginning and 194.0 MB in the end (delta: -29.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:33:51,045 INFO L168 Benchmark]: TraceAbstraction took 9757.31 ms. Allocated memory was 234.9 MB in the beginning and 430.4 MB in the end (delta: 195.6 MB). Free memory was 194.0 MB in the beginning and 344.2 MB in the end (delta: -150.1 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-08-21 15:33:51,049 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 617.38 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 168.8 MB in the end (delta: -67.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.43 ms. Allocated memory is still 201.9 MB. Free memory was 168.8 MB in the beginning and 164.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1086.34 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 164.4 MB in the beginning and 194.0 MB in the end (delta: -29.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9757.31 ms. Allocated memory was 234.9 MB in the beginning and 430.4 MB in the end (delta: 195.6 MB). Free memory was 194.0 MB in the beginning and 344.2 MB in the end (delta: -150.1 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 598]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int pumpRunning = 0; [L416] int systemActive = 1; [L672] int waterLevel = 1; [L673] int methaneLevelCritical = 0; [L761] int cleanupTimeShifts = 4; [L837] int retValue_acc ; [L838] int tmp ; [L842] FCALL select_helpers() [L843] FCALL select_features() [L844] CALL, EXPR valid_product() [L920] int retValue_acc ; [L923] retValue_acc = 1 [L924] return (retValue_acc); [L844] RET, EXPR valid_product() [L844] tmp = valid_product() [L846] COND TRUE \read(tmp) [L848] FCALL setup() [L849] CALL runTest() [L828] CALL test() [L607] int splverifierCounter ; [L608] int tmp ; [L609] int tmp___0 ; [L610] int tmp___1 ; [L611] int tmp___2 ; [L614] splverifierCounter = 0 [L616] COND TRUE 1 [L618] COND TRUE splverifierCounter < 4 [L624] tmp = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp) [L628] CALL waterRise() [L690] COND TRUE waterLevel < 2 [L691] waterLevel = waterLevel + 1 [L628] RET waterRise() [L634] tmp___0 = __VERIFIER_nondet_int() [L636] COND FALSE !(\read(tmp___0)) [L644] tmp___2 = __VERIFIER_nondet_int() [L646] COND TRUE \read(tmp___2) [L659] CALL timeShift() [L423] COND FALSE !(\read(pumpRunning)) [L430] COND TRUE \read(systemActive) [L432] CALL processEnvironment() [L478] int tmp ; [L481] COND FALSE !(\read(pumpRunning)) [L496] CALL processEnvironment__wrappee__lowWaterSensor() [L452] int tmp ; [L455] COND FALSE !(\read(pumpRunning)) [L470] FCALL processEnvironment__wrappee__base() [L496] RET processEnvironment__wrappee__lowWaterSensor() [L432] RET processEnvironment() [L438] CALL __utac_acc__Specification3_spec__1() [L861] int tmp ; [L862] int tmp___0 ; [L863] int tmp___1 ; [L867] CALL, EXPR isMethaneLevelCritical() [L711] int retValue_acc ; [L714] retValue_acc = methaneLevelCritical [L715] return (retValue_acc); [L867] RET, EXPR isMethaneLevelCritical() [L867] tmp = isMethaneLevelCritical() [L869] COND FALSE !(\read(tmp)) [L873] CALL, EXPR getWaterLevel() [L743] int retValue_acc ; [L746] retValue_acc = waterLevel [L747] return (retValue_acc); [L873] RET, EXPR getWaterLevel() [L873] tmp___0 = getWaterLevel() [L875] COND TRUE tmp___0 == 2 [L877] CALL, EXPR isPumpRunning() [L530] int retValue_acc ; [L533] retValue_acc = pumpRunning [L534] return (retValue_acc); [L877] RET, EXPR isPumpRunning() [L877] tmp___1 = isPumpRunning() [L879] COND FALSE !(\read(tmp___1)) [L883] CALL __automaton_fail() [L598] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 438 SDtfs, 581 SDslu, 237 SDs, 0 SdLazy, 1451 SolverSat, 331 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred 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: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 130 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 63992 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...