/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_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:35:33,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:35:33,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:35:33,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:35:33,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:35:33,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:35:33,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:35:33,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:35:33,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:35:33,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:35:33,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:35:33,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:35:33,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:35:33,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:35:33,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:35:33,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:35:33,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:35:33,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:35:33,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:35:33,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:35:33,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:35:33,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:35:33,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:35:33,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:35:33,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:35:33,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:35:33,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:35:33,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:35:33,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:35:33,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:35:33,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:35:33,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:35:33,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:35:33,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:35:33,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:35:33,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:35:33,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:35:33,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:35:33,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:35:33,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:35:33,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:35:33,537 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 23:35:33,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:35:33,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:35:33,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:35:33,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:35:33,580 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:35:33,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:35:33,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:35:33,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:35:33,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:35:33,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:35:33,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:35:33,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:35:33,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:35:33,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:35:33,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:35:33,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:35:33,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:35:33,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:35:33,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:35:33,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:35:33,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:35:33,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:35:33,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:35:33,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:35:33,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:35:33,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:35:33,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:35:33,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:35:33,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:35:33,587 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 23:35:34,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:35:34,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:35:34,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:35:34,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:35:34,087 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:35:34,088 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2020-09-24 23:35:34,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/750ea5de4/9f25c2dae98d4cf1b7937bfa9cca26f6/FLAG46c40f39e [2020-09-24 23:35:34,800 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:35:34,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2020-09-24 23:35:34,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/750ea5de4/9f25c2dae98d4cf1b7937bfa9cca26f6/FLAG46c40f39e [2020-09-24 23:35:35,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/750ea5de4/9f25c2dae98d4cf1b7937bfa9cca26f6 [2020-09-24 23:35:35,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:35:35,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:35:35,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:35:35,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:35:35,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:35:35,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:35:35" (1/1) ... [2020-09-24 23:35:35,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35, skipping insertion in model container [2020-09-24 23:35:35,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:35:35" (1/1) ... [2020-09-24 23:35:35,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:35:35,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:35:35,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:35:35,638 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:35:35,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:35:35,873 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:35:35,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35 WrapperNode [2020-09-24 23:35:35,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:35:35,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:35:35,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:35:35,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:35:35,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35" (1/1) ... [2020-09-24 23:35:35,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35" (1/1) ... [2020-09-24 23:35:35,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35" (1/1) ... [2020-09-24 23:35:35,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35" (1/1) ... [2020-09-24 23:35:35,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35" (1/1) ... [2020-09-24 23:35:35,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35" (1/1) ... [2020-09-24 23:35:35,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35" (1/1) ... [2020-09-24 23:35:36,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:35:36,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:35:36,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:35:36,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:35:36,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35" (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 23:35:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:35:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:35:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 23:35:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 23:35:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 23:35:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 23:35:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 23:35:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:35:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 23:35:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 23:35:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 23:35:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 23:35:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 23:35:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 23:35:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 23:35:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 23:35:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 23:35:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 23:35:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 23:35:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 23:35:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 23:35:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 23:35:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 23:35:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 23:35:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 23:35:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 23:35:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 23:35:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 23:35:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 23:35:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 23:35:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 23:35:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 23:35:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 23:35:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 23:35:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 23:35:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 23:35:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 23:35:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 23:35:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 23:35:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:35:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:35:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 23:35:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 23:35:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 23:35:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 23:35:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 23:35:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 23:35:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 23:35:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 23:35:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 23:35:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 23:35:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 23:35:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 23:35:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 23:35:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:35:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 23:35:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 23:35:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 23:35:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 23:35:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 23:35:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 23:35:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:35:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 23:35:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:35:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:35:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 23:35:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:35:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:35:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:35:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:35:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 23:35:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:35:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 23:35:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 23:35:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:35:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 23:35:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 23:35:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 23:35:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 23:35:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 23:35:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 23:35:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 23:35:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 23:35:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 23:35:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 23:35:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 23:35:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 23:35:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 23:35:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 23:35:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:35:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 23:35:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:35:37,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:35:37,536 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 23:35:37,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:35:37 BoogieIcfgContainer [2020-09-24 23:35:37,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:35:37,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:35:37,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:35:37,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:35:37,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:35:35" (1/3) ... [2020-09-24 23:35:37,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717e95f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:35:37, skipping insertion in model container [2020-09-24 23:35:37,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:35" (2/3) ... [2020-09-24 23:35:37,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717e95f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:35:37, skipping insertion in model container [2020-09-24 23:35:37,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:35:37" (3/3) ... [2020-09-24 23:35:37,554 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c [2020-09-24 23:35:37,566 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:35:37,578 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:35:37,602 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:35:37,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:35:37,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:35:37,638 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:35:37,638 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:35:37,638 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:35:37,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:35:37,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:35:37,639 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:35:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-09-24 23:35:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 23:35:37,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:35:37,691 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 23:35:37,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:35:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:35:37,699 INFO L82 PathProgramCache]: Analyzing trace with hash -502047938, now seen corresponding path program 1 times [2020-09-24 23:35:37,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:35:37,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682367595] [2020-09-24 23:35:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:35:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:43,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:43,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 23:35:43,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:35:43,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-09-24 23:35:43,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:35:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 23:35:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 23:35:43,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 23:35:43,666 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:35:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:35:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:43,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:43,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:43,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:35:43,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-24 23:35:43,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:35:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:35:44,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:35:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:44,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:44,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:44,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:44,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:44,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:35:44,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:35:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:35:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:44,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:44,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:44,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:44,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:44,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:35:44,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:44,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:44,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:44,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:35:44,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:44,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:35:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:44,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:44,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:44,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:44,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:35:44,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:44,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:35:44,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:35:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:44,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:44,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:44,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:44,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:35:44,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:35:44,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:44,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 23:35:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:44,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:44,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:44,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:44,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:35:44,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:35:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 23:35:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:44,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:44,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:44,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:44,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:44,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:35:44,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:35:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:35:44,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:44,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 23:35:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:44,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:44,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:44,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:44,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:35:44,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:35:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:44,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:35:44,244 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 23:35:44,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682367595] [2020-09-24 23:35:44,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:35:44,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:35:44,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127311989] [2020-09-24 23:35:44,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:35:44,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:35:44,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:35:44,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:35:44,282 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 8 states. [2020-09-24 23:35:44,924 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:35:46,534 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:35:46,898 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:35:47,300 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:35:47,736 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:35:48,083 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:35:48,801 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:35:49,122 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:35:50,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:35:50,152 INFO L93 Difference]: Finished difference Result 586 states and 723 transitions. [2020-09-24 23:35:50,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:35:50,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-24 23:35:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:35:50,181 INFO L225 Difference]: With dead ends: 586 [2020-09-24 23:35:50,181 INFO L226 Difference]: Without dead ends: 390 [2020-09-24 23:35:50,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:35:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-09-24 23:35:50,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 346. [2020-09-24 23:35:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-09-24 23:35:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 380 transitions. [2020-09-24 23:35:50,322 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 380 transitions. Word has length 153 [2020-09-24 23:35:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:35:50,323 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 380 transitions. [2020-09-24 23:35:50,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:35:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 380 transitions. [2020-09-24 23:35:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 23:35:50,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:35:50,330 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] [2020-09-24 23:35:50,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:35:50,331 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:35:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:35:50,331 INFO L82 PathProgramCache]: Analyzing trace with hash -812188964, now seen corresponding path program 1 times [2020-09-24 23:35:50,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:35:50,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856667929] [2020-09-24 23:35:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:35:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:50,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:50,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 23:35:50,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-24 23:35:50,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-24 23:35:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:35:50,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:51,022 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:35:51,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:35:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:51,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:51,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:35:51,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 23:35:51,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:51,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:51,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:35:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:51,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:51,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:51,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:51,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:35:51,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:51,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:35:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:51,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:51,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:51,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:51,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:51,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:35:51,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:51,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:35:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:51,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:35:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:51,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:35:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:51,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:51,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:51,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:51,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:51,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:35:51,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:51,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:51,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 23:35:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:51,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:51,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:51,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:35:51,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:51,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:35:51,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:51,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:51,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 23:35:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:51,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:51,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:51,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:35:51,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:35:51,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 23:35:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 23:35:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:51,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:51,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:51,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:35:51,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:35:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:51,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 23:35:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:51,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:51,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:51,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:35:51,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:35:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:35:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 23:35:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:51,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:51,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:51,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:35:51,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:35:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:51,305 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 23:35:51,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856667929] [2020-09-24 23:35:51,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:35:51,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:35:51,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134594296] [2020-09-24 23:35:51,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:35:51,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:35:51,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:35:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:35:51,310 INFO L87 Difference]: Start difference. First operand 346 states and 380 transitions. Second operand 6 states. [2020-09-24 23:35:51,909 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:35:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:35:53,351 INFO L93 Difference]: Finished difference Result 725 states and 881 transitions. [2020-09-24 23:35:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:35:53,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-09-24 23:35:53,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:35:53,367 INFO L225 Difference]: With dead ends: 725 [2020-09-24 23:35:53,367 INFO L226 Difference]: Without dead ends: 489 [2020-09-24 23:35:53,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:35:53,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-09-24 23:35:53,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 351. [2020-09-24 23:35:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-09-24 23:35:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 385 transitions. [2020-09-24 23:35:53,452 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 385 transitions. Word has length 172 [2020-09-24 23:35:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:35:53,453 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 385 transitions. [2020-09-24 23:35:53,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:35:53,453 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 385 transitions. [2020-09-24 23:35:53,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-24 23:35:53,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:35:53,458 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, 1, 1, 1] [2020-09-24 23:35:53,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:35:53,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:35:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:35:53,459 INFO L82 PathProgramCache]: Analyzing trace with hash 74620443, now seen corresponding path program 1 times [2020-09-24 23:35:53,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:35:53,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983175537] [2020-09-24 23:35:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:35:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:35:53,529 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:35:53,530 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:35:53,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:35:53,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:35:53 BoogieIcfgContainer [2020-09-24 23:35:53,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:35:53,566 INFO L168 Benchmark]: Toolchain (without parser) took 18449.51 ms. Allocated memory was 140.0 MB in the beginning and 500.2 MB in the end (delta: 360.2 MB). Free memory was 101.6 MB in the beginning and 406.3 MB in the end (delta: -304.7 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-09-24 23:35:53,567 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:35:53,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.52 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 172.9 MB in the end (delta: -71.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-09-24 23:35:53,569 INFO L168 Benchmark]: Boogie Preprocessor took 129.11 ms. Allocated memory is still 202.9 MB. Free memory was 172.9 MB in the beginning and 168.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-24 23:35:53,570 INFO L168 Benchmark]: RCFGBuilder took 1539.81 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 168.7 MB in the beginning and 179.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:35:53,571 INFO L168 Benchmark]: TraceAbstraction took 16018.49 ms. Allocated memory was 237.0 MB in the beginning and 500.2 MB in the end (delta: 263.2 MB). Free memory was 178.3 MB in the beginning and 406.3 MB in the end (delta: -228.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. [2020-09-24 23:35:53,575 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 751.52 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 172.9 MB in the end (delta: -71.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.11 ms. Allocated memory is still 202.9 MB. Free memory was 172.9 MB in the beginning and 168.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1539.81 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 168.7 MB in the beginning and 179.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16018.49 ms. Allocated memory was 237.0 MB in the beginning and 500.2 MB in the end (delta: 263.2 MB). Free memory was 178.3 MB in the beginning and 406.3 MB in the end (delta: -228.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 643]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L184] int waterLevel = 1; [L185] int methaneLevelCritical = 0; [L442] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L832] int splverifierCounter ; [L833] int tmp ; [L834] int tmp___0 ; [L835] int tmp___1 ; [L836] int tmp___2 ; [L839] splverifierCounter = 0 [L841] COND TRUE 1 [L843] COND TRUE splverifierCounter < 4 [L849] tmp = __VERIFIER_nondet_int() [L851] COND TRUE \read(tmp) [L853] CALL waterRise() [L202] COND TRUE waterLevel < 2 [L203] waterLevel = waterLevel + 1 [L853] RET waterRise() [L859] tmp___0 = __VERIFIER_nondet_int() [L861] COND FALSE !(\read(tmp___0)) [L869] tmp___2 = __VERIFIER_nondet_int() [L871] COND TRUE \read(tmp___2) [L873] CALL startSystem() [L826] systemActive = 1 [L873] RET startSystem() [L886] CALL timeShift() [L660] COND FALSE !(\read(pumpRunning)) [L667] COND TRUE \read(systemActive) [L669] CALL processEnvironment() [L689] int tmp ; [L692] COND FALSE !(\read(pumpRunning)) [L707] FCALL processEnvironment__wrappee__base() [L669] RET processEnvironment() [L675] CALL __utac_acc__Specification3_spec__1() [L899] int tmp ; [L900] int tmp___0 ; [L901] int tmp___1 ; [L905] CALL, EXPR isMethaneLevelCritical() [L223] int retValue_acc ; [L226] retValue_acc = methaneLevelCritical [L227] return (retValue_acc); [L905] RET, EXPR isMethaneLevelCritical() [L905] tmp = isMethaneLevelCritical() [L907] COND FALSE !(\read(tmp)) [L911] CALL, EXPR getWaterLevel() [L255] int retValue_acc ; [L258] retValue_acc = waterLevel [L259] return (retValue_acc); [L911] RET, EXPR getWaterLevel() [L911] tmp___0 = getWaterLevel() [L913] COND TRUE tmp___0 == 2 [L915] CALL, EXPR isPumpRunning() [L759] int retValue_acc ; [L762] retValue_acc = pumpRunning [L763] return (retValue_acc); [L915] RET, EXPR isPumpRunning() [L915] tmp___1 = isPumpRunning() [L917] COND FALSE !(\read(tmp___1)) [L921] CALL __automaton_fail() [L643] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 622 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 467 SDtfs, 933 SDslu, 706 SDs, 0 SdLazy, 1474 SolverSat, 311 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 182 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 505 NumberOfCodeBlocks, 505 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 128744 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...