/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=WIDEST --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_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:01:14,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:01:14,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:01:14,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:01:14,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:01:15,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:01:15,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:01:15,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:01:15,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:01:15,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:01:15,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:01:15,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:01:15,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:01:15,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:01:15,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:01:15,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:01:15,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:01:15,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:01:15,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:01:15,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:01:15,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:01:15,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:01:15,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:01:15,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:01:15,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:01:15,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:01:15,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:01:15,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:01:15,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:01:15,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:01:15,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:01:15,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:01:15,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:01:15,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:01:15,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:01:15,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:01:15,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:01:15,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:01:15,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:01:15,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:01:15,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:01:15,044 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 22:01:15,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:01:15,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:01:15,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:01:15,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:01:15,098 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:01:15,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:01:15,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:01:15,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:01:15,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:01:15,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:01:15,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:01:15,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:01:15,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:01:15,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:01:15,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:01:15,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:01:15,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:01:15,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:01:15,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:01:15,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:01:15,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:01:15,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:01:15,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:01:15,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:01:15,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:01:15,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:01:15,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:01:15,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:01:15,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:01:15,110 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:01:15,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:01:15,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:01:15,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:01:15,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:01:15,455 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:01:15,456 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2020-08-21 22:01:15,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fdadbfa7/f5c8b33c5f79486fa314b976a5078ae7/FLAG6daa6adcd [2020-08-21 22:01:16,054 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:01:16,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2020-08-21 22:01:16,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fdadbfa7/f5c8b33c5f79486fa314b976a5078ae7/FLAG6daa6adcd [2020-08-21 22:01:16,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fdadbfa7/f5c8b33c5f79486fa314b976a5078ae7 [2020-08-21 22:01:16,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:01:16,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:01:16,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:01:16,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:01:16,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:01:16,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:01:16" (1/1) ... [2020-08-21 22:01:16,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0619bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:16, skipping insertion in model container [2020-08-21 22:01:16,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:01:16" (1/1) ... [2020-08-21 22:01:16,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:01:16,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:01:16,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:01:16,977 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:01:17,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:01:17,147 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:01:17,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:17 WrapperNode [2020-08-21 22:01:17,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:01:17,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:01:17,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:01:17,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:01:17,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:17" (1/1) ... [2020-08-21 22:01:17,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:17" (1/1) ... [2020-08-21 22:01:17,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:17" (1/1) ... [2020-08-21 22:01:17,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:17" (1/1) ... [2020-08-21 22:01:17,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:17" (1/1) ... [2020-08-21 22:01:17,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:17" (1/1) ... [2020-08-21 22:01:17,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:17" (1/1) ... [2020-08-21 22:01:17,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:01:17,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:01:17,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:01:17,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:01:17,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:17" (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 22:01:17,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:01:17,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:01:17,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:01:17,317 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:01:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:01:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:01:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:01:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:01:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:01:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:01:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:01:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:01:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 22:01:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:01:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:01:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:01:17,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:01:17,320 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:01:17,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:01:17,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 22:01:17,320 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:01:17,320 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:01:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:01:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:01:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:01:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:01:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:01:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:01:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:01:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:01:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 22:01:17,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:01:17,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:01:17,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:01:17,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:01:17,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:01:17,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:01:17,324 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:01:17,324 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:01:17,324 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:01:17,324 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:01:17,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:01:17,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:01:17,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:01:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:01:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:01:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:01:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:01:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:01:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:01:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:01:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:01:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:01:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:01:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:01:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 22:01:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:01:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:01:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:01:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:01:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:01:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:01:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:01:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:01:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:01:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:01:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:01:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:01:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 22:01:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:01:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:01:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 22:01:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:01:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:01:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:01:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:01:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:01:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:01:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:01:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:01:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:01:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:01:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:01:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:01:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:01:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:01:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:01:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:01:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:01:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:01:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:01:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:01:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:01:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:01:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:01:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:01:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:01:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:01:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:01:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:01:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:01:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:01:18,440 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:01:18,440 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:01:18,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:01:18 BoogieIcfgContainer [2020-08-21 22:01:18,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:01:18,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:01:18,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:01:18,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:01:18,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:01:16" (1/3) ... [2020-08-21 22:01:18,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25955a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:01:18, skipping insertion in model container [2020-08-21 22:01:18,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:01:17" (2/3) ... [2020-08-21 22:01:18,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25955a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:01:18, skipping insertion in model container [2020-08-21 22:01:18,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:01:18" (3/3) ... [2020-08-21 22:01:18,455 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2020-08-21 22:01:18,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:01:18,475 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:01:18,489 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:01:18,515 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:01:18,515 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:01:18,515 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:01:18,515 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:01:18,516 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:01:18,516 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:01:18,516 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:01:18,516 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:01:18,539 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-08-21 22:01:18,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:01:18,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:18,552 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 22:01:18,553 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:18,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:18,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1153750625, now seen corresponding path program 1 times [2020-08-21 22:01:18,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:18,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601688788] [2020-08-21 22:01:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:19,173 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:19,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:19,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:19,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:01:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:01:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:19,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:01:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:19,280 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 22:01:19,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601688788] [2020-08-21 22:01:19,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:19,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:01:19,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818745138] [2020-08-21 22:01:19,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:01:19,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:19,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:01:19,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:01:19,307 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 3 states. [2020-08-21 22:01:20,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:20,669 INFO L93 Difference]: Finished difference Result 380 states and 494 transitions. [2020-08-21 22:01:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:01:20,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 22:01:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:20,687 INFO L225 Difference]: With dead ends: 380 [2020-08-21 22:01:20,687 INFO L226 Difference]: Without dead ends: 205 [2020-08-21 22:01:20,692 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 22:01:20,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-08-21 22:01:20,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 166. [2020-08-21 22:01:20,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-21 22:01:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 198 transitions. [2020-08-21 22:01:20,797 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 198 transitions. Word has length 52 [2020-08-21 22:01:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:20,798 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 198 transitions. [2020-08-21 22:01:20,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:01:20,798 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 198 transitions. [2020-08-21 22:01:20,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 22:01:20,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:20,803 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 22:01:20,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:01:20,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:20,804 INFO L82 PathProgramCache]: Analyzing trace with hash -2119837363, now seen corresponding path program 1 times [2020-08-21 22:01:20,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:20,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961798499] [2020-08-21 22:01:20,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,109 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:21,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:01:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:01:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:01:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,154 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 22:01:21,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961798499] [2020-08-21 22:01:21,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:21,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:01:21,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014922203] [2020-08-21 22:01:21,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:01:21,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:21,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:01:21,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:01:21,158 INFO L87 Difference]: Start difference. First operand 166 states and 198 transitions. Second operand 4 states. [2020-08-21 22:01:21,616 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:22,648 INFO L93 Difference]: Finished difference Result 303 states and 373 transitions. [2020-08-21 22:01:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:01:22,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 22:01:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:22,658 INFO L225 Difference]: With dead ends: 303 [2020-08-21 22:01:22,658 INFO L226 Difference]: Without dead ends: 189 [2020-08-21 22:01:22,660 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 22:01:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-21 22:01:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2020-08-21 22:01:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-21 22:01:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 186 transitions. [2020-08-21 22:01:22,705 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 186 transitions. Word has length 53 [2020-08-21 22:01:22,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:22,705 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 186 transitions. [2020-08-21 22:01:22,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:01:22,706 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 186 transitions. [2020-08-21 22:01:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 22:01:22,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:22,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:01:22,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:01:22,709 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:22,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1174645714, now seen corresponding path program 1 times [2020-08-21 22:01:22,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:22,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041679608] [2020-08-21 22:01:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:23,027 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:23,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:23,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:23,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:23,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:23,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:01:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:01:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:01:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:23,167 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 22:01:23,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041679608] [2020-08-21 22:01:23,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:23,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:01:23,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105604455] [2020-08-21 22:01:23,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:01:23,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:23,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:01:23,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:01:23,178 INFO L87 Difference]: Start difference. First operand 157 states and 186 transitions. Second operand 8 states. [2020-08-21 22:01:23,567 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:23,875 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:24,122 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:24,360 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:25,054 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:27,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:27,442 INFO L93 Difference]: Finished difference Result 540 states and 672 transitions. [2020-08-21 22:01:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:01:27,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 22:01:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:27,448 INFO L225 Difference]: With dead ends: 540 [2020-08-21 22:01:27,448 INFO L226 Difference]: Without dead ends: 407 [2020-08-21 22:01:27,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:01:27,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-08-21 22:01:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 334. [2020-08-21 22:01:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-21 22:01:27,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 407 transitions. [2020-08-21 22:01:27,538 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 407 transitions. Word has length 58 [2020-08-21 22:01:27,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:27,539 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 407 transitions. [2020-08-21 22:01:27,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:01:27,539 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 407 transitions. [2020-08-21 22:01:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 22:01:27,542 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:27,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:01:27,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:01:27,543 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:27,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:27,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1545438199, now seen corresponding path program 1 times [2020-08-21 22:01:27,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:27,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001370759] [2020-08-21 22:01:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:27,891 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:27,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:27,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:27,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:27,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:27,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:01:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:01:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:27,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:01:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:27,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 22:01:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:27,974 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 22:01:27,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001370759] [2020-08-21 22:01:27,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:27,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:01:27,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327711741] [2020-08-21 22:01:27,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:01:27,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:27,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:01:27,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:01:27,977 INFO L87 Difference]: Start difference. First operand 334 states and 407 transitions. Second operand 8 states. [2020-08-21 22:01:28,381 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:29,721 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:30,111 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:30,437 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:30,726 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:32,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:32,018 INFO L93 Difference]: Finished difference Result 1041 states and 1365 transitions. [2020-08-21 22:01:32,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:01:32,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 22:01:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:32,028 INFO L225 Difference]: With dead ends: 1041 [2020-08-21 22:01:32,029 INFO L226 Difference]: Without dead ends: 731 [2020-08-21 22:01:32,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:01:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-21 22:01:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 653. [2020-08-21 22:01:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-08-21 22:01:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 809 transitions. [2020-08-21 22:01:32,167 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 809 transitions. Word has length 63 [2020-08-21 22:01:32,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:32,169 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 809 transitions. [2020-08-21 22:01:32,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:01:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 809 transitions. [2020-08-21 22:01:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 22:01:32,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:32,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:01:32,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:01:32,179 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:32,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:32,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1461698211, now seen corresponding path program 1 times [2020-08-21 22:01:32,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:32,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254858999] [2020-08-21 22:01:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:01:32,266 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:01:32,266 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:01:32,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:01:32,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:01:32 BoogieIcfgContainer [2020-08-21 22:01:32,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:01:32,304 INFO L168 Benchmark]: Toolchain (without parser) took 15912.36 ms. Allocated memory was 147.3 MB in the beginning and 477.6 MB in the end (delta: 330.3 MB). Free memory was 100.8 MB in the beginning and 139.2 MB in the end (delta: -38.4 MB). Peak memory consumption was 291.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:32,306 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:01:32,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.12 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 100.6 MB in the beginning and 167.4 MB in the end (delta: -66.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:32,314 INFO L168 Benchmark]: Boogie Preprocessor took 91.61 ms. Allocated memory is still 202.9 MB. Free memory was 167.4 MB in the beginning and 162.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:32,315 INFO L168 Benchmark]: RCFGBuilder took 1205.52 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 162.8 MB in the beginning and 189.1 MB in the end (delta: -26.3 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:32,316 INFO L168 Benchmark]: TraceAbstraction took 13854.78 ms. Allocated memory was 237.0 MB in the beginning and 477.6 MB in the end (delta: 240.6 MB). Free memory was 187.7 MB in the beginning and 139.2 MB in the end (delta: 48.5 MB). Peak memory consumption was 289.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:32,329 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.12 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 100.6 MB in the beginning and 167.4 MB in the end (delta: -66.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.61 ms. Allocated memory is still 202.9 MB. Free memory was 167.4 MB in the beginning and 162.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1205.52 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 162.8 MB in the beginning and 189.1 MB in the end (delta: -26.3 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13854.78 ms. Allocated memory was 237.0 MB in the beginning and 477.6 MB in the end (delta: 240.6 MB). Free memory was 187.7 MB in the beginning and 139.2 MB in the end (delta: 48.5 MB). Peak memory consumption was 289.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L90] int pumpRunning = 0; [L91] int systemActive = 1; [L427] int waterLevel = 1; [L428] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L896] int cleanupTimeShifts = 4; [L969] int retValue_acc ; [L970] int tmp ; [L974] FCALL select_helpers() [L975] FCALL select_features() [L976] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L976] RET, EXPR valid_product() [L976] tmp = valid_product() [L978] COND TRUE \read(tmp) [L980] FCALL setup() [L981] CALL runTest() [L963] CALL test() [L358] int splverifierCounter ; [L359] int tmp ; [L360] int tmp___0 ; [L361] int tmp___1 ; [L362] int tmp___2 ; [L365] splverifierCounter = 0 [L367] COND TRUE 1 [L369] COND TRUE splverifierCounter < 4 [L375] tmp = __VERIFIER_nondet_int() [L377] COND TRUE \read(tmp) [L379] CALL waterRise() [L445] COND TRUE waterLevel < 2 [L446] waterLevel = waterLevel + 1 [L379] RET waterRise() [L385] tmp___0 = __VERIFIER_nondet_int() [L387] COND FALSE !(\read(tmp___0)) [L395] tmp___2 = __VERIFIER_nondet_int() [L397] COND FALSE !(\read(tmp___2)) [L403] tmp___1 = __VERIFIER_nondet_int() [L405] COND TRUE \read(tmp___1) [L407] CALL stopSystem() [L334] COND FALSE !(\read(pumpRunning)) [L341] systemActive = 0 [L407] RET stopSystem() [L414] CALL timeShift() [L98] COND FALSE !(\read(pumpRunning)) [L105] COND FALSE !(\read(systemActive)) [L113] CALL __utac_acc__Specification3_spec__1() [L1002] int tmp ; [L1003] int tmp___0 ; [L1004] int tmp___1 ; [L1008] CALL, EXPR isMethaneLevelCritical() [L466] int retValue_acc ; [L469] retValue_acc = methaneLevelCritical [L470] return (retValue_acc); [L1008] RET, EXPR isMethaneLevelCritical() [L1008] tmp = isMethaneLevelCritical() [L1010] COND FALSE !(\read(tmp)) [L1014] CALL, EXPR getWaterLevel() [L498] int retValue_acc ; [L501] retValue_acc = waterLevel [L502] return (retValue_acc); [L1014] RET, EXPR getWaterLevel() [L1014] tmp___0 = getWaterLevel() [L1016] COND TRUE tmp___0 == 2 [L1018] CALL, EXPR isPumpRunning() [L248] int retValue_acc ; [L251] retValue_acc = pumpRunning [L252] return (retValue_acc); [L1018] RET, EXPR isPumpRunning() [L1018] tmp___1 = isPumpRunning() [L1020] COND FALSE !(\read(tmp___1)) [L1024] CALL __automaton_fail() [L996] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 265 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 627 SDtfs, 1054 SDslu, 413 SDs, 0 SdLazy, 2428 SolverSat, 646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=653occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 222 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 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...