/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=HIGHLEXORDER --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_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:47:20,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:47:20,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:47:20,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:47:20,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:47:20,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:47:20,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:47:20,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:47:20,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:47:20,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:47:20,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:47:20,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:47:20,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:47:20,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:47:20,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:47:20,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:47:20,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:47:20,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:47:20,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:47:20,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:47:20,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:47:20,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:47:20,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:47:20,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:47:20,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:47:20,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:47:20,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:47:20,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:47:20,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:47:20,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:47:20,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:47:20,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:47:20,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:47:20,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:47:20,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:47:20,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:47:20,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:47:20,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:47:20,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:47:20,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:47:20,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:47:20,151 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 18:47:20,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:47:20,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:47:20,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:47:20,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:47:20,190 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:47:20,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:47:20,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:47:20,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:47:20,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:47:20,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:47:20,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:47:20,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:47:20,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:47:20,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:47:20,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:47:20,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:47:20,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:47:20,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:47:20,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:47:20,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:47:20,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:47:20,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:47:20,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:47:20,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:47:20,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:47:20,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:47:20,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:47:20,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:47:20,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:47:20,197 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:47:20,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:47:20,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:47:20,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:47:20,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:47:20,547 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:47:20,548 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c [2020-08-21 18:47:20,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a8b873e2/f368913d83124953ac51b3992fc5da43/FLAG82aa767ba [2020-08-21 18:47:21,164 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:47:21,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c [2020-08-21 18:47:21,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a8b873e2/f368913d83124953ac51b3992fc5da43/FLAG82aa767ba [2020-08-21 18:47:21,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a8b873e2/f368913d83124953ac51b3992fc5da43 [2020-08-21 18:47:21,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:47:21,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:47:21,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:47:21,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:47:21,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:47:21,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:47:21" (1/1) ... [2020-08-21 18:47:21,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:21, skipping insertion in model container [2020-08-21 18:47:21,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:47:21" (1/1) ... [2020-08-21 18:47:21,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:47:21,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:47:21,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:47:22,011 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:47:22,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:47:22,146 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:47:22,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:22 WrapperNode [2020-08-21 18:47:22,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:47:22,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:47:22,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:47:22,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:47:22,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:22" (1/1) ... [2020-08-21 18:47:22,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:22" (1/1) ... [2020-08-21 18:47:22,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:22" (1/1) ... [2020-08-21 18:47:22,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:22" (1/1) ... [2020-08-21 18:47:22,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:22" (1/1) ... [2020-08-21 18:47:22,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:22" (1/1) ... [2020-08-21 18:47:22,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:22" (1/1) ... [2020-08-21 18:47:22,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:47:22,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:47:22,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:47:22,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:47:22,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:22" (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 18:47:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:47:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:47:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:47:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 18:47:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:47:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:47:22,303 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:47:22,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:47:22,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:47:22,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:47:22,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:47:22,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 18:47:22,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:47:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:47:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:47:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:47:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:47:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:47:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:47:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:47:22,307 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:47:22,307 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:47:22,307 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:47:22,307 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:47:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:47:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:47:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:47:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:47:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 18:47:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 18:47:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 18:47:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:47:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:47:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:47:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:47:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:47:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:47:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:47:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:47:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:47:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:47:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:47:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:47:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:47:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:47:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:47:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:47:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:47:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:47:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 18:47:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:47:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:47:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:47:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:47:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:47:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 18:47:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:47:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:47:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:47:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:47:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:47:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:47:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:47:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:47:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:47:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:47:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:47:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:47:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:47:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:47:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:47:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:47:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:47:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:47:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:47:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:47:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:47:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 18:47:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 18:47:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:47:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:47:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:47:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:47:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 18:47:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:47:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:47:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:47:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:47:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:47:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:47:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:47:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:47:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:47:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:47:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:47:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:47:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:47:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:47:23,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:47:23,459 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:47:23,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:47:23 BoogieIcfgContainer [2020-08-21 18:47:23,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:47:23,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:47:23,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:47:23,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:47:23,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:47:21" (1/3) ... [2020-08-21 18:47:23,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106ab24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:47:23, skipping insertion in model container [2020-08-21 18:47:23,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:22" (2/3) ... [2020-08-21 18:47:23,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106ab24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:47:23, skipping insertion in model container [2020-08-21 18:47:23,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:47:23" (3/3) ... [2020-08-21 18:47:23,472 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2020-08-21 18:47:23,482 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:47:23,491 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:47:23,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:47:23,527 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:47:23,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:47:23,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:47:23,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:47:23,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:47:23,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:47:23,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:47:23,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:47:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-21 18:47:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 18:47:23,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:23,564 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 18:47:23,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:23,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:23,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1312501880, now seen corresponding path program 1 times [2020-08-21 18:47:23,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:23,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373579386] [2020-08-21 18:47:23,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,279 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:24,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:47:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:47:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:47:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,372 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 18:47:24,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373579386] [2020-08-21 18:47:24,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:24,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:47:24,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979115573] [2020-08-21 18:47:24,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:47:24,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:24,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:47:24,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:47:24,402 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-21 18:47:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:25,665 INFO L93 Difference]: Finished difference Result 332 states and 431 transitions. [2020-08-21 18:47:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:47:25,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 18:47:25,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:25,683 INFO L225 Difference]: With dead ends: 332 [2020-08-21 18:47:25,684 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 18:47:25,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:47:25,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 18:47:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 144. [2020-08-21 18:47:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-21 18:47:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-21 18:47:25,811 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 52 [2020-08-21 18:47:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:25,811 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-21 18:47:25,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:47:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-21 18:47:25,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 18:47:25,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:25,816 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 18:47:25,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:47:25,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1642029938, now seen corresponding path program 1 times [2020-08-21 18:47:25,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:25,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21091167] [2020-08-21 18:47:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:26,162 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:26,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:26,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:26,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:26,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:26,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:47:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:47:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 18:47:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:26,210 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 18:47:26,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21091167] [2020-08-21 18:47:26,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:26,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:47:26,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334970466] [2020-08-21 18:47:26,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:47:26,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:26,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:47:26,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:47:26,214 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 4 states. [2020-08-21 18:47:26,658 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:27,599 INFO L93 Difference]: Finished difference Result 255 states and 310 transitions. [2020-08-21 18:47:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:47:27,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 18:47:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:27,604 INFO L225 Difference]: With dead ends: 255 [2020-08-21 18:47:27,605 INFO L226 Difference]: Without dead ends: 163 [2020-08-21 18:47:27,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:47:27,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-21 18:47:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2020-08-21 18:47:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-21 18:47:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2020-08-21 18:47:27,650 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 53 [2020-08-21 18:47:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:27,651 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2020-08-21 18:47:27,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:47:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2020-08-21 18:47:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 18:47:27,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:27,654 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 18:47:27,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:47:27,654 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:27,655 INFO L82 PathProgramCache]: Analyzing trace with hash 493625468, now seen corresponding path program 1 times [2020-08-21 18:47:27,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:27,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146752015] [2020-08-21 18:47:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:27,977 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:27,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:47:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:47:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:47:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,057 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 18:47:28,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146752015] [2020-08-21 18:47:28,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:28,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:47:28,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236252635] [2020-08-21 18:47:28,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:47:28,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:28,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:47:28,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:47:28,060 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand 8 states. [2020-08-21 18:47:28,456 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:28,784 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:29,034 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:29,280 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:30,016 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:32,003 INFO L93 Difference]: Finished difference Result 466 states and 575 transitions. [2020-08-21 18:47:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:47:32,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 18:47:32,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:32,012 INFO L225 Difference]: With dead ends: 466 [2020-08-21 18:47:32,012 INFO L226 Difference]: Without dead ends: 355 [2020-08-21 18:47:32,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:47:32,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-21 18:47:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 290. [2020-08-21 18:47:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-21 18:47:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 349 transitions. [2020-08-21 18:47:32,131 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 349 transitions. Word has length 58 [2020-08-21 18:47:32,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:32,131 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 349 transitions. [2020-08-21 18:47:32,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:47:32,132 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 349 transitions. [2020-08-21 18:47:32,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 18:47:32,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:32,135 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 18:47:32,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:47:32,135 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:32,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:32,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1982308337, now seen corresponding path program 1 times [2020-08-21 18:47:32,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:32,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422939802] [2020-08-21 18:47:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,464 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:32,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:47:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:47:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 18:47:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 18:47:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,549 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 18:47:32,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422939802] [2020-08-21 18:47:32,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:32,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:47:32,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966421949] [2020-08-21 18:47:32,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:47:32,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:32,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:47:32,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:47:32,551 INFO L87 Difference]: Start difference. First operand 290 states and 349 transitions. Second operand 8 states. [2020-08-21 18:47:32,911 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:34,361 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:34,708 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:34,986 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:35,246 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:36,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:36,107 INFO L93 Difference]: Finished difference Result 893 states and 1167 transitions. [2020-08-21 18:47:36,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 18:47:36,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 18:47:36,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:36,115 INFO L225 Difference]: With dead ends: 893 [2020-08-21 18:47:36,115 INFO L226 Difference]: Without dead ends: 627 [2020-08-21 18:47:36,117 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 18:47:36,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-21 18:47:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 557. [2020-08-21 18:47:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2020-08-21 18:47:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 683 transitions. [2020-08-21 18:47:36,239 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 683 transitions. Word has length 63 [2020-08-21 18:47:36,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:36,240 INFO L479 AbstractCegarLoop]: Abstraction has 557 states and 683 transitions. [2020-08-21 18:47:36,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:47:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 683 transitions. [2020-08-21 18:47:36,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 18:47:36,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:36,245 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 18:47:36,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:47:36,245 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:36,246 INFO L82 PathProgramCache]: Analyzing trace with hash -427232299, now seen corresponding path program 1 times [2020-08-21 18:47:36,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:36,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375734051] [2020-08-21 18:47:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:47:36,306 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:47:36,306 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:47:36,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:47:36,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:47:36 BoogieIcfgContainer [2020-08-21 18:47:36,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:47:36,334 INFO L168 Benchmark]: Toolchain (without parser) took 14882.09 ms. Allocated memory was 141.6 MB in the beginning and 463.5 MB in the end (delta: 321.9 MB). Free memory was 104.0 MB in the beginning and 262.8 MB in the end (delta: -158.7 MB). Peak memory consumption was 163.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:47:36,335 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:47:36,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.41 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.8 MB in the beginning and 173.0 MB in the end (delta: -69.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:47:36,337 INFO L168 Benchmark]: Boogie Preprocessor took 89.19 ms. Allocated memory is still 203.9 MB. Free memory was 173.0 MB in the beginning and 169.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 18:47:36,338 INFO L168 Benchmark]: RCFGBuilder took 1227.05 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 169.0 MB in the beginning and 189.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:47:36,339 INFO L168 Benchmark]: TraceAbstraction took 12867.34 ms. Allocated memory was 233.8 MB in the beginning and 463.5 MB in the end (delta: 229.6 MB). Free memory was 189.5 MB in the beginning and 262.8 MB in the end (delta: -73.3 MB). Peak memory consumption was 156.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:47:36,343 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.41 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.8 MB in the beginning and 173.0 MB in the end (delta: -69.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.19 ms. Allocated memory is still 203.9 MB. Free memory was 173.0 MB in the beginning and 169.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1227.05 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 169.0 MB in the beginning and 189.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12867.34 ms. Allocated memory was 233.8 MB in the beginning and 463.5 MB in the end (delta: 229.6 MB). Free memory was 189.5 MB in the beginning and 262.8 MB in the end (delta: -73.3 MB). Peak memory consumption was 156.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 853]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] int waterLevel = 1; [L85] int methaneLevelCritical = 0; [L356] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L559] int pumpRunning = 0; [L560] int systemActive = 1; [L896] int cleanupTimeShifts = 4; [L969] int retValue_acc ; [L970] int tmp ; [L974] FCALL select_helpers() [L975] FCALL select_features() [L976] CALL, EXPR valid_product() [L887] int retValue_acc ; [L890] retValue_acc = 1 [L891] 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() [L781] int splverifierCounter ; [L782] int tmp ; [L783] int tmp___0 ; [L784] int tmp___1 ; [L785] int tmp___2 ; [L788] splverifierCounter = 0 [L790] COND TRUE 1 [L792] COND TRUE splverifierCounter < 4 [L798] tmp = __VERIFIER_nondet_int() [L800] COND TRUE \read(tmp) [L802] CALL waterRise() [L102] COND TRUE waterLevel < 2 [L103] waterLevel = waterLevel + 1 [L802] RET waterRise() [L808] tmp___0 = __VERIFIER_nondet_int() [L810] COND FALSE !(\read(tmp___0)) [L818] tmp___2 = __VERIFIER_nondet_int() [L820] COND FALSE !(\read(tmp___2)) [L826] tmp___1 = __VERIFIER_nondet_int() [L828] COND TRUE \read(tmp___1) [L830] CALL stopSystem() [L759] COND FALSE !(\read(pumpRunning)) [L766] systemActive = 0 [L830] RET stopSystem() [L837] CALL timeShift() [L566] COND FALSE !(\read(pumpRunning)) [L573] COND FALSE !(\read(systemActive)) [L581] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L123] int retValue_acc ; [L126] retValue_acc = methaneLevelCritical [L127] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L155] int retValue_acc ; [L158] retValue_acc = waterLevel [L159] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L673] int retValue_acc ; [L676] retValue_acc = pumpRunning [L677] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L853] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 248 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 540 SDtfs, 879 SDslu, 375 SDs, 0 SdLazy, 2083 SolverSat, 522 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=557occurred 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, 198 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...