/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --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_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:36:30,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:36:30,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:36:30,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:36:30,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:36:30,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:36:30,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:36:30,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:36:30,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:36:30,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:36:30,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:36:30,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:36:30,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:36:30,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:36:30,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:36:30,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:36:30,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:36:30,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:36:30,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:36:30,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:36:30,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:36:30,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:36:30,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:36:30,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:36:30,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:36:30,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:36:30,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:36:30,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:36:30,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:36:30,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:36:30,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:36:30,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:36:30,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:36:30,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:36:30,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:36:30,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:36:30,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:36:30,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:36:30,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:36:30,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:36:30,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:36:30,167 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 [2020-09-24 23:36:30,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:36:30,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:36:30,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:36:30,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:36:30,230 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:36:30,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:36:30,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:36:30,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:36:30,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:36:30,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:36:30,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:36:30,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:36:30,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:36:30,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:36:30,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:36:30,234 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:36:30,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:36:30,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:36:30,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:36:30,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:36:30,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:36:30,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:36:30,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:36:30,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:36:30,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:36:30,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:36:30,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:36:30,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:36:30,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:36:30,237 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:36:30,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:36:30,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:36:30,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:36:30,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:36:30,710 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:36:30,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c [2020-09-24 23:36:30,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0eca7e24/f3f07ba63eb5494a889dc73c4d35a401/FLAG03e2f7f63 [2020-09-24 23:36:31,416 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:36:31,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c [2020-09-24 23:36:31,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0eca7e24/f3f07ba63eb5494a889dc73c4d35a401/FLAG03e2f7f63 [2020-09-24 23:36:31,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0eca7e24/f3f07ba63eb5494a889dc73c4d35a401 [2020-09-24 23:36:31,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:36:31,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:36:31,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:36:31,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:36:31,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:36:31,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:36:31" (1/1) ... [2020-09-24 23:36:31,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac45341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:31, skipping insertion in model container [2020-09-24 23:36:31,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:36:31" (1/1) ... [2020-09-24 23:36:31,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:36:31,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:36:32,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:36:32,315 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:36:32,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:36:32,482 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:36:32,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:32 WrapperNode [2020-09-24 23:36:32,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:36:32,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:36:32,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:36:32,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:36:32,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:32" (1/1) ... [2020-09-24 23:36:32,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:32" (1/1) ... [2020-09-24 23:36:32,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:32" (1/1) ... [2020-09-24 23:36:32,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:32" (1/1) ... [2020-09-24 23:36:32,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:32" (1/1) ... [2020-09-24 23:36:32,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:32" (1/1) ... [2020-09-24 23:36:32,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:32" (1/1) ... [2020-09-24 23:36:32,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:36:32,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:36:32,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:36:32,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:36:32,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:32" (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 [2020-09-24 23:36:32,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:36:32,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:36:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 23:36:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 23:36:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 23:36:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 23:36:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 23:36:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 23:36:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 23:36:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 23:36:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 23:36:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 23:36:32,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 23:36:32,700 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 23:36:32,700 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 23:36:32,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 23:36:32,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 23:36:32,702 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 23:36:32,702 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 23:36:32,702 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 23:36:32,702 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 23:36:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:36:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 23:36:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 23:36:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 23:36:32,704 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 23:36:32,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 23:36:32,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 23:36:32,705 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 23:36:32,705 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 23:36:32,705 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 23:36:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 23:36:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 23:36:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 23:36:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 23:36:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 23:36:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 23:36:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 23:36:32,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 23:36:32,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 23:36:32,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 23:36:32,707 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 23:36:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:36:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 23:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 23:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 23:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:36:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:36:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:36:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:36:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 23:36:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:36:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 23:36:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 23:36:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:36:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 23:36:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 23:36:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:36:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 23:36:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 23:36:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 23:36:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 23:36:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 23:36:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 23:36:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 23:36:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 23:36:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 23:36:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 23:36:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 23:36:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 23:36:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 23:36:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 23:36:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 23:36:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 23:36:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 23:36:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 23:36:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 23:36:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:36:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 23:36:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 23:36:32,719 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 23:36:32,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 23:36:32,719 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 23:36:32,719 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 23:36:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 23:36:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 23:36:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 23:36:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 23:36:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 23:36:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 23:36:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 23:36:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 23:36:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:36:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 23:36:32,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:36:34,041 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:36:34,042 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 23:36:34,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:36:34 BoogieIcfgContainer [2020-09-24 23:36:34,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:36:34,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:36:34,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:36:34,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:36:34,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:36:31" (1/3) ... [2020-09-24 23:36:34,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdbbbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:36:34, skipping insertion in model container [2020-09-24 23:36:34,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:36:32" (2/3) ... [2020-09-24 23:36:34,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdbbbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:36:34, skipping insertion in model container [2020-09-24 23:36:34,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:36:34" (3/3) ... [2020-09-24 23:36:34,059 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product59.cil.c [2020-09-24 23:36:34,071 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:36:34,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:36:34,102 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:36:34,135 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:36:34,136 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:36:34,136 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:36:34,136 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:36:34,136 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:36:34,136 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:36:34,137 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:36:34,137 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:36:34,167 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states. [2020-09-24 23:36:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 23:36:34,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:36:34,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:36:34,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:36:34,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:36:34,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1122426674, now seen corresponding path program 1 times [2020-09-24 23:36:34,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:36:34,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184019260] [2020-09-24 23:36:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:36:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:34,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:39,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:39,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 23:36:39,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:36:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 23:36:39,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:39,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:36:39,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 23:36:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 23:36:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-24 23:36:40,111 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:36:40,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:36:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:40,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:40,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:36:40,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:40,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-24 23:36:40,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:40,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:40,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:40,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:36:40,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:36:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:40,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:40,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:40,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:40,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:40,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:36:40,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:36:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:40,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:40,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:40,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:40,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:40,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:36:40,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:40,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:40,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:36:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:40,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:40,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:40,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:40,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:36:40,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:36:40,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:36:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:40,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:40,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:40,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:40,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:36:40,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:40,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:40,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:40,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:40,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 23:36:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:40,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:40,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:40,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:40,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:40,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:36:40,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:36:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:40,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 23:36:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:40,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:40,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:40,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:40,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:36:40,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:36:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:36:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:40,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 23:36:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:40,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:40,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:40,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:40,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:40,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:36:40,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:40,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:36:40,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184019260] [2020-09-24 23:36:40,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:36:40,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:36:40,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294210990] [2020-09-24 23:36:40,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:36:40,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:36:40,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:36:40,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:36:40,846 INFO L87 Difference]: Start difference. First operand 346 states. Second operand 8 states. [2020-09-24 23:36:41,493 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:36:43,122 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:36:43,497 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:36:43,879 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:36:44,311 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:36:44,672 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:36:45,360 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:36:45,682 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:36:47,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:36:47,570 INFO L93 Difference]: Finished difference Result 760 states and 942 transitions. [2020-09-24 23:36:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:36:47,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-24 23:36:47,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:36:47,597 INFO L225 Difference]: With dead ends: 760 [2020-09-24 23:36:47,597 INFO L226 Difference]: Without dead ends: 508 [2020-09-24 23:36:47,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:36:47,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-09-24 23:36:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 454. [2020-09-24 23:36:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-09-24 23:36:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 510 transitions. [2020-09-24 23:36:47,824 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 510 transitions. Word has length 153 [2020-09-24 23:36:47,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:36:47,825 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 510 transitions. [2020-09-24 23:36:47,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:36:47,825 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 510 transitions. [2020-09-24 23:36:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 23:36:47,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:36:47,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:36:47,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:36:47,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:36:47,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:36:47,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1670043451, now seen corresponding path program 1 times [2020-09-24 23:36:47,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:36:47,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721317203] [2020-09-24 23:36:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:36:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:47,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:49,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:49,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 23:36:49,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:49,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1308 [2020-09-24 23:36:49,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:36:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-24 23:36:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 23:36:49,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:49,488 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:36:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:36:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:49,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:49,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:49,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:36:49,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-24 23:36:49,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 23:36:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:36:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:49,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:49,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:49,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:36:49,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:36:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:49,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:49,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:49,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:36:49,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:49,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:36:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:49,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:49,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:49,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:49,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:36:49,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:36:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:49,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:36:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:49,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:49,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:49,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:49,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:36:49,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:49,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:49,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 23:36:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:49,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:49,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:36:49,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:36:49,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:36:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:49,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 23:36:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:49,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:49,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:49,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:36:49,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-24 23:36:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:49,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:49,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:49,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:49,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:36:49,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:49,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:49,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:49,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:49,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 23:36:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:49,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:49,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:49,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:36:49,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:49,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:36:50,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721317203] [2020-09-24 23:36:50,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:36:50,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:36:50,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167517422] [2020-09-24 23:36:50,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:36:50,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:36:50,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:36:50,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:36:50,115 INFO L87 Difference]: Start difference. First operand 454 states and 510 transitions. Second operand 5 states. [2020-09-24 23:36:50,636 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:36:53,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:36:53,278 INFO L93 Difference]: Finished difference Result 1288 states and 1555 transitions. [2020-09-24 23:36:53,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:36:53,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-24 23:36:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:36:53,290 INFO L225 Difference]: With dead ends: 1288 [2020-09-24 23:36:53,290 INFO L226 Difference]: Without dead ends: 944 [2020-09-24 23:36:53,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:36:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2020-09-24 23:36:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 789. [2020-09-24 23:36:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-09-24 23:36:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 902 transitions. [2020-09-24 23:36:53,439 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 902 transitions. Word has length 168 [2020-09-24 23:36:53,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:36:53,439 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 902 transitions. [2020-09-24 23:36:53,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:36:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 902 transitions. [2020-09-24 23:36:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 23:36:53,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:36:53,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:36:53,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:36:53,447 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:36:53,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:36:53,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1697188589, now seen corresponding path program 1 times [2020-09-24 23:36:53,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:36:53,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337071462] [2020-09-24 23:36:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:36:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:36:53,524 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:36:53,524 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:36:53,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:36:53,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:36:53 BoogieIcfgContainer [2020-09-24 23:36:53,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:36:53,561 INFO L168 Benchmark]: Toolchain (without parser) took 21883.81 ms. Allocated memory was 141.0 MB in the beginning and 518.5 MB in the end (delta: 377.5 MB). Free memory was 102.8 MB in the beginning and 130.1 MB in the end (delta: -27.3 MB). Peak memory consumption was 350.2 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:53,562 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:36:53,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.97 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 172.4 MB in the end (delta: -70.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:53,564 INFO L168 Benchmark]: Boogie Preprocessor took 107.25 ms. Allocated memory is still 205.0 MB. Free memory was 172.4 MB in the beginning and 167.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:53,565 INFO L168 Benchmark]: RCFGBuilder took 1455.14 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 167.8 MB in the beginning and 169.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:53,566 INFO L168 Benchmark]: TraceAbstraction took 19507.78 ms. Allocated memory was 235.9 MB in the beginning and 518.5 MB in the end (delta: 282.6 MB). Free memory was 167.8 MB in the beginning and 130.1 MB in the end (delta: 37.7 MB). Peak memory consumption was 320.3 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:53,570 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 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.97 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 172.4 MB in the end (delta: -70.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.25 ms. Allocated memory is still 205.0 MB. Free memory was 172.4 MB in the beginning and 167.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1455.14 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 167.8 MB in the beginning and 169.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19507.78 ms. Allocated memory was 235.9 MB in the beginning and 518.5 MB in the end (delta: 282.6 MB). Free memory was 167.8 MB in the beginning and 130.1 MB in the end (delta: 37.7 MB). Peak memory consumption was 320.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 694]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L414] int waterLevel = 1; [L415] int methaneLevelCritical = 0; [L517] int cleanupTimeShifts = 4; [L769] int pumpRunning = 0; [L770] int systemActive = 1; [L596] int retValue_acc ; [L597] int tmp ; [L601] FCALL select_helpers() [L602] FCALL select_features() [L603] CALL, EXPR valid_product() [L645] int retValue_acc ; [L648] retValue_acc = 1 [L649] return (retValue_acc); [L603] RET, EXPR valid_product() [L603] tmp = valid_product() [L605] COND TRUE \read(tmp) [L607] FCALL setup() [L608] CALL runTest() [L587] CALL test() [L701] int splverifierCounter ; [L702] int tmp ; [L703] int tmp___0 ; [L704] int tmp___1 ; [L705] int tmp___2 ; [L708] splverifierCounter = 0 [L710] COND TRUE 1 [L712] COND TRUE splverifierCounter < 4 [L718] tmp = __VERIFIER_nondet_int() [L720] COND TRUE \read(tmp) [L722] CALL waterRise() [L432] COND TRUE waterLevel < 2 [L433] waterLevel = waterLevel + 1 [L722] RET waterRise() [L728] tmp___0 = __VERIFIER_nondet_int() [L730] COND FALSE !(\read(tmp___0)) [L738] tmp___2 = __VERIFIER_nondet_int() [L740] COND FALSE !(\read(tmp___2)) [L744] tmp___1 = __VERIFIER_nondet_int() [L746] COND TRUE \read(tmp___1) [L748] CALL stopSystem() [L987] COND FALSE !(\read(pumpRunning)) [L994] systemActive = 0 [L748] RET stopSystem() [L755] CALL timeShift() [L776] COND FALSE !(\read(pumpRunning)) [L783] COND FALSE !(\read(systemActive)) [L791] CALL __utac_acc__Specification3_spec__1() [L657] int tmp ; [L658] int tmp___0 ; [L659] int tmp___1 ; [L663] CALL, EXPR isMethaneLevelCritical() [L453] int retValue_acc ; [L456] retValue_acc = methaneLevelCritical [L457] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND FALSE !(\read(tmp)) [L669] CALL, EXPR getWaterLevel() [L485] int retValue_acc ; [L488] retValue_acc = waterLevel [L489] return (retValue_acc); [L669] RET, EXPR getWaterLevel() [L669] tmp___0 = getWaterLevel() [L671] COND TRUE tmp___0 == 2 [L673] CALL, EXPR isPumpRunning() [L901] int retValue_acc ; [L904] retValue_acc = pumpRunning [L905] return (retValue_acc); [L673] RET, EXPR isPumpRunning() [L673] tmp___1 = isPumpRunning() [L675] COND FALSE !(\read(tmp___1)) [L679] CALL __automaton_fail() [L694] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 658 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 624 SDtfs, 1078 SDslu, 762 SDs, 0 SdLazy, 2136 SolverSat, 363 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=789occurred in iteration=2, 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, 2 MinimizatonAttempts, 209 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 319 ConstructedInterpolants, 0 QuantifiedInterpolants, 137626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...