/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:13:00,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:13:00,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:13:00,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:13:00,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:13:00,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:13:00,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:13:00,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:13:00,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:13:00,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:13:00,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:13:00,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:13:00,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:13:00,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:13:00,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:13:00,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:13:00,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:13:00,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:13:00,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:13:00,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:13:00,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:13:00,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:13:00,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:13:00,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:13:00,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:13:00,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:13:00,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:13:00,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:13:00,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:13:00,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:13:00,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:13:00,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:13:00,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:13:00,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:13:00,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:13:00,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:13:00,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:13:00,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:13:00,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:13:00,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:13:00,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:13:00,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:13:00,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:13:00,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:13:00,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:13:00,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:13:00,243 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:13:00,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:13:00,243 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:13:00,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:13:00,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:13:00,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:13:00,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:13:00,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:13:00,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:13:00,246 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:13:00,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:13:00,247 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:13:00,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:13:00,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:13:00,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:13:00,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:13:00,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:13:00,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:13:00,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:13:00,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:13:00,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:13:00,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:13:00,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:13:00,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:13:00,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:13:00,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:13:00,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:13:00,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:13:00,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:13:00,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:13:00,568 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:13:00,569 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-08-19 04:13:00,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aec553d4/cb549bad6292497693a5ee436517c762/FLAGde9bab423 [2020-08-19 04:13:01,189 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:13:01,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-08-19 04:13:01,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aec553d4/cb549bad6292497693a5ee436517c762/FLAGde9bab423 [2020-08-19 04:13:01,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aec553d4/cb549bad6292497693a5ee436517c762 [2020-08-19 04:13:01,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:13:01,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:13:01,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:13:01,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:13:01,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:13:01,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:13:01" (1/1) ... [2020-08-19 04:13:01,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35e781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:01, skipping insertion in model container [2020-08-19 04:13:01,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:13:01" (1/1) ... [2020-08-19 04:13:01,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:13:01,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:13:02,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:13:02,138 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:13:02,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:13:02,287 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:13:02,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02 WrapperNode [2020-08-19 04:13:02,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:13:02,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:13:02,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:13:02,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:13:02,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... [2020-08-19 04:13:02,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:13:02,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:13:02,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:13:02,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:13:02,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:13:02,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:13:02,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:13:02,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:13:02,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:13:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:13:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:13:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:13:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:13:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:13:02,502 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:13:02,502 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:13:02,503 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:13:02,503 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:13:02,503 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:13:02,503 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:13:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:13:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:13:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:13:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:13:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:13:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:13:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:13:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:13:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:13:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:13:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:13:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:13:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:13:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:13:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:13:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:13:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:13:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:13:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 04:13:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:13:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:13:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:13:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:13:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:13:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:13:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:13:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:13:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:13:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:13:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:13:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:13:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:13:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:13:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:13:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:13:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:13:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:13:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:13:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:13:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:13:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:13:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:13:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:13:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:13:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:13:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:13:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:13:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:13:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:13:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:13:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:13:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:13:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 04:13:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:13:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:13:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:13:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:13:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:13:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:13:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:13:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:13:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:13:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:13:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:13:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:13:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:13:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:13:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:13:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:13:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:13:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:13:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:13:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:13:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:13:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:13:03,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:13:03,568 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:13:03,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:13:03 BoogieIcfgContainer [2020-08-19 04:13:03,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:13:03,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:13:03,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:13:03,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:13:03,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:13:01" (1/3) ... [2020-08-19 04:13:03,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af15b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:13:03, skipping insertion in model container [2020-08-19 04:13:03,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:02" (2/3) ... [2020-08-19 04:13:03,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af15b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:13:03, skipping insertion in model container [2020-08-19 04:13:03,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:13:03" (3/3) ... [2020-08-19 04:13:03,582 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-08-19 04:13:03,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:13:03,599 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:13:03,614 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:13:03,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:13:03,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:13:03,650 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:13:03,650 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:13:03,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:13:03,651 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:13:03,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:13:03,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:13:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-08-19 04:13:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:13:03,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:03,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:13:03,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:03,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:03,712 INFO L82 PathProgramCache]: Analyzing trace with hash -93036640, now seen corresponding path program 1 times [2020-08-19 04:13:03,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:03,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682367595] [2020-08-19 04:13:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:04,445 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:04,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:04,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:04,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:04,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:13:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:04,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:13:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:04,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:13:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:04,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682367595] [2020-08-19 04:13:04,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:04,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:13:04,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989507637] [2020-08-19 04:13:04,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:13:04,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:04,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:13:04,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:13:04,599 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-08-19 04:13:05,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:05,747 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2020-08-19 04:13:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:13:05,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 04:13:05,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:05,764 INFO L225 Difference]: With dead ends: 291 [2020-08-19 04:13:05,764 INFO L226 Difference]: Without dead ends: 157 [2020-08-19 04:13:05,769 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 [2020-08-19 04:13:05,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-19 04:13:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-08-19 04:13:05,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-19 04:13:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-08-19 04:13:05,859 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52 [2020-08-19 04:13:05,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:05,860 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-08-19 04:13:05,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:13:05,860 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-08-19 04:13:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 04:13:05,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:05,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:13:05,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:13:05,867 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:05,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:05,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1403357497, now seen corresponding path program 1 times [2020-08-19 04:13:05,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:05,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962320876] [2020-08-19 04:13:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,292 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:06,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:13:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:13:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:13:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:06,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962320876] [2020-08-19 04:13:06,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:06,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:13:06,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982725102] [2020-08-19 04:13:06,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:13:06,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:06,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:13:06,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:13:06,342 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states. [2020-08-19 04:13:06,751 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:07,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:07,490 INFO L93 Difference]: Finished difference Result 224 states and 275 transitions. [2020-08-19 04:13:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:13:07,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 04:13:07,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:07,493 INFO L225 Difference]: With dead ends: 224 [2020-08-19 04:13:07,494 INFO L226 Difference]: Without dead ends: 141 [2020-08-19 04:13:07,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:13:07,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-19 04:13:07,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-19 04:13:07,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-19 04:13:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-19 04:13:07,538 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53 [2020-08-19 04:13:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:07,541 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-19 04:13:07,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:13:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-19 04:13:07,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 04:13:07,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:07,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:13:07,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:13:07,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:07,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:07,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1713517472, now seen corresponding path program 1 times [2020-08-19 04:13:07,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:07,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274313397] [2020-08-19 04:13:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:07,897 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:07,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:07,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:13:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:13:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:07,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 04:13:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:07,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274313397] [2020-08-19 04:13:07,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:07,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:13:07,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077536684] [2020-08-19 04:13:07,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:13:07,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:07,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:13:07,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:13:07,997 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 8 states. [2020-08-19 04:13:08,426 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:08,754 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:09,031 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:09,268 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:10,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:10,321 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2020-08-19 04:13:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:13:10,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 04:13:10,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:10,324 INFO L225 Difference]: With dead ends: 233 [2020-08-19 04:13:10,324 INFO L226 Difference]: Without dead ends: 141 [2020-08-19 04:13:10,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:13:10,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-19 04:13:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-19 04:13:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-19 04:13:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-08-19 04:13:10,357 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57 [2020-08-19 04:13:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:10,358 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-08-19 04:13:10,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:13:10,358 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-08-19 04:13:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 04:13:10,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:10,360 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] [2020-08-19 04:13:10,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:13:10,361 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:10,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:10,361 INFO L82 PathProgramCache]: Analyzing trace with hash -949895556, now seen corresponding path program 1 times [2020-08-19 04:13:10,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:10,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486262310] [2020-08-19 04:13:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,697 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:10,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:13:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:13:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:13:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 04:13:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:10,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486262310] [2020-08-19 04:13:10,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:10,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:13:10,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362959367] [2020-08-19 04:13:10,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:13:10,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:10,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:13:10,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:13:10,783 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states. [2020-08-19 04:13:11,252 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:12,720 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:13,010 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:13,240 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:13,613 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:13,994 INFO L93 Difference]: Finished difference Result 348 states and 456 transitions. [2020-08-19 04:13:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 04:13:13,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-08-19 04:13:13,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:14,000 INFO L225 Difference]: With dead ends: 348 [2020-08-19 04:13:14,000 INFO L226 Difference]: Without dead ends: 256 [2020-08-19 04:13:14,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:13:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-19 04:13:14,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2020-08-19 04:13:14,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-08-19 04:13:14,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2020-08-19 04:13:14,059 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70 [2020-08-19 04:13:14,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:14,059 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2020-08-19 04:13:14,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:13:14,060 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2020-08-19 04:13:14,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 04:13:14,062 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:14,062 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] [2020-08-19 04:13:14,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:13:14,063 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:14,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:14,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1700935146, now seen corresponding path program 1 times [2020-08-19 04:13:14,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:14,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973146105] [2020-08-19 04:13:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:13:14,123 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:13:14,123 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:13:14,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:13:14,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:13:14 BoogieIcfgContainer [2020-08-19 04:13:14,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:13:14,153 INFO L168 Benchmark]: Toolchain (without parser) took 12581.44 ms. Allocated memory was 147.8 MB in the beginning and 428.3 MB in the end (delta: 280.5 MB). Free memory was 102.7 MB in the beginning and 276.0 MB in the end (delta: -173.3 MB). Peak memory consumption was 107.2 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:14,154 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:13:14,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.37 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 102.5 MB in the beginning and 169.6 MB in the end (delta: -67.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:14,156 INFO L168 Benchmark]: Boogie Preprocessor took 112.45 ms. Allocated memory is still 202.9 MB. Free memory was 169.6 MB in the beginning and 165.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:14,157 INFO L168 Benchmark]: RCFGBuilder took 1168.78 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 165.0 MB in the beginning and 192.2 MB in the end (delta: -27.2 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:14,158 INFO L168 Benchmark]: TraceAbstraction took 10576.26 ms. Allocated memory was 235.4 MB in the beginning and 428.3 MB in the end (delta: 192.9 MB). Free memory was 192.2 MB in the beginning and 276.0 MB in the end (delta: -83.8 MB). Peak memory consumption was 109.1 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:14,161 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 716.37 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 102.5 MB in the beginning and 169.6 MB in the end (delta: -67.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.45 ms. Allocated memory is still 202.9 MB. Free memory was 169.6 MB in the beginning and 165.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1168.78 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 165.0 MB in the beginning and 192.2 MB in the end (delta: -27.2 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10576.26 ms. Allocated memory was 235.4 MB in the beginning and 428.3 MB in the end (delta: 192.9 MB). Free memory was 192.2 MB in the beginning and 276.0 MB in the end (delta: -83.8 MB). Peak memory consumption was 109.1 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: 10.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 438 SDtfs, 581 SDslu, 242 SDs, 0 SdLazy, 1451 SolverSat, 331 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.3s 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, 0.3s SatisfiabilityAnalysisTime, 1.6s 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...