/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 17:57:15,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 17:57:15,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 17:57:16,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 17:57:16,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 17:57:16,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 17:57:16,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 17:57:16,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 17:57:16,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 17:57:16,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 17:57:16,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 17:57:16,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 17:57:16,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 17:57:16,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 17:57:16,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 17:57:16,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 17:57:16,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 17:57:16,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 17:57:16,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 17:57:16,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 17:57:16,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 17:57:16,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 17:57:16,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 17:57:16,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 17:57:16,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 17:57:16,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 17:57:16,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 17:57:16,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 17:57:16,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 17:57:16,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 17:57:16,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 17:57:16,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 17:57:16,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 17:57:16,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 17:57:16,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 17:57:16,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 17:57:16,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 17:57:16,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 17:57:16,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 17:57:16,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 17:57:16,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 17:57:16,101 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 [2020-10-12 17:57:16,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 17:57:16,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 17:57:16,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 17:57:16,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 17:57:16,141 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 17:57:16,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 17:57:16,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 17:57:16,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 17:57:16,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 17:57:16,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 17:57:16,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 17:57:16,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 17:57:16,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 17:57:16,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 17:57:16,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 17:57:16,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 17:57:16,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 17:57:16,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 17:57:16,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 17:57:16,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 17:57:16,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 17:57:16,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 17:57:16,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 17:57:16,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 17:57:16,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 17:57:16,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 17:57:16,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 17:57:16,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 17:57:16,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 17:57:16,147 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 17:57:16,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 17:57:16,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 17:57:16,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 17:57:16,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 17:57:16,479 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 17:57:16,480 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-10-12 17:57:16,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/251a0dd65/c8553df12b5847cfb5aaaad345a88273/FLAG4a1b9956c [2020-10-12 17:57:17,021 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 17:57:17,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-10-12 17:57:17,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/251a0dd65/c8553df12b5847cfb5aaaad345a88273/FLAG4a1b9956c [2020-10-12 17:57:17,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/251a0dd65/c8553df12b5847cfb5aaaad345a88273 [2020-10-12 17:57:17,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 17:57:17,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 17:57:17,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 17:57:17,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 17:57:17,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 17:57:17,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:57:17" (1/1) ... [2020-10-12 17:57:17,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fb647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:17, skipping insertion in model container [2020-10-12 17:57:17,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:57:17" (1/1) ... [2020-10-12 17:57:17,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 17:57:17,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 17:57:17,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 17:57:18,013 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 17:57:18,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 17:57:18,189 INFO L208 MainTranslator]: Completed translation [2020-10-12 17:57:18,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:18 WrapperNode [2020-10-12 17:57:18,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 17:57:18,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 17:57:18,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 17:57:18,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 17:57:18,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:18" (1/1) ... [2020-10-12 17:57:18,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:18" (1/1) ... [2020-10-12 17:57:18,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:18" (1/1) ... [2020-10-12 17:57:18,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:18" (1/1) ... [2020-10-12 17:57:18,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:18" (1/1) ... [2020-10-12 17:57:18,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:18" (1/1) ... [2020-10-12 17:57:18,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:18" (1/1) ... [2020-10-12 17:57:18,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 17:57:18,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 17:57:18,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 17:57:18,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 17:57:18,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:18" (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 [2020-10-12 17:57:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 17:57:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 17:57:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-12 17:57:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-12 17:57:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-12 17:57:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-12 17:57:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-12 17:57:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-12 17:57:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-12 17:57:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-12 17:57:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-12 17:57:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-12 17:57:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-12 17:57:18,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-12 17:57:18,352 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-12 17:57:18,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 17:57:18,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-12 17:57:18,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-12 17:57:18,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-12 17:57:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-12 17:57:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-12 17:57:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-12 17:57:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-12 17:57:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-12 17:57:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-12 17:57:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-12 17:57:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-12 17:57:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-12 17:57:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-12 17:57:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-12 17:57:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-12 17:57:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-12 17:57:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-12 17:57:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-12 17:57:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-12 17:57:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-12 17:57:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-12 17:57:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-12 17:57:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-12 17:57:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 17:57:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 17:57:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-12 17:57:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-12 17:57:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-12 17:57:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-12 17:57:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-12 17:57:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-12 17:57:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-12 17:57:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-12 17:57:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 17:57:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-12 17:57:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-12 17:57:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-12 17:57:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-12 17:57:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-12 17:57:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-12 17:57:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-12 17:57:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-12 17:57:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-12 17:57:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-12 17:57:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-12 17:57:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 17:57:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-12 17:57:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-12 17:57:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-12 17:57:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-12 17:57:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-12 17:57:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-12 17:57:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-12 17:57:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-12 17:57:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-12 17:57:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-12 17:57:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-12 17:57:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-12 17:57:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 17:57:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 17:57:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-12 17:57:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 17:57:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 17:57:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 17:57:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 17:57:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-12 17:57:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 17:57:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-12 17:57:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-12 17:57:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 17:57:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-12 17:57:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-12 17:57:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-12 17:57:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 17:57:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-12 17:57:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 17:57:19,330 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 17:57:19,330 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-12 17:57:19,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:57:19 BoogieIcfgContainer [2020-10-12 17:57:19,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 17:57:19,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 17:57:19,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 17:57:19,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 17:57:19,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:57:17" (1/3) ... [2020-10-12 17:57:19,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371ea917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:57:19, skipping insertion in model container [2020-10-12 17:57:19,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:18" (2/3) ... [2020-10-12 17:57:19,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371ea917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:57:19, skipping insertion in model container [2020-10-12 17:57:19,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:57:19" (3/3) ... [2020-10-12 17:57:19,350 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product22.cil.c [2020-10-12 17:57:19,357 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 17:57:19,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 17:57:19,374 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 17:57:19,396 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 17:57:19,396 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 17:57:19,396 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 17:57:19,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 17:57:19,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 17:57:19,397 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 17:57:19,397 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 17:57:19,397 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 17:57:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-10-12 17:57:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 17:57:19,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:57:19,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 17:57:19,432 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:57:19,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:57:19,438 INFO L82 PathProgramCache]: Analyzing trace with hash 578570237, now seen corresponding path program 1 times [2020-10-12 17:57:19,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:57:19,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872826482] [2020-10-12 17:57:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:57:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:19,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:20,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:22,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:22,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 17:57:22,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 17:57:22,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2275 [2020-10-12 17:57:22,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 17:57:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 17:57:22,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 17:57:22,433 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 17:57:22,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 17:57:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:22,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:22,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:22,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 17:57:22,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 17:57:22,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:22,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 17:57:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:22,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:22,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:22,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:22,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 17:57:22,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:22,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 17:57:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:22,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:22,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:22,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:22,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:22,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 17:57:22,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:22,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:22,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:22,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:22,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 17:57:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:22,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:22,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:22,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:22,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:22,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 17:57:22,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:22,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 17:57:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:22,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:22,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:22,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:22,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:22,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:22,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:22,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 17:57:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:22,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:22,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:22,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:22,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:22,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 17:57:22,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:22,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:22,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:22,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 17:57:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:22,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:22,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:22,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:22,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 17:57:22,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 17:57:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:22,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 17:57:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:22,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:22,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:22,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:22,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:22,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 17:57:22,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872826482] [2020-10-12 17:57:22,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 17:57:22,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 17:57:22,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291673036] [2020-10-12 17:57:22,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 17:57:22,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 17:57:22,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 17:57:22,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 17:57:22,775 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 7 states. [2020-10-12 17:57:23,431 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:57:24,934 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-12 17:57:25,298 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 17:57:25,596 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 17:57:25,888 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 17:57:26,291 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:57:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 17:57:27,521 INFO L93 Difference]: Finished difference Result 424 states and 573 transitions. [2020-10-12 17:57:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 17:57:27,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-12 17:57:27,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 17:57:27,544 INFO L225 Difference]: With dead ends: 424 [2020-10-12 17:57:27,544 INFO L226 Difference]: Without dead ends: 273 [2020-10-12 17:57:27,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-12 17:57:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-12 17:57:27,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 234. [2020-10-12 17:57:27,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-12 17:57:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 288 transitions. [2020-10-12 17:57:27,665 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 288 transitions. Word has length 52 [2020-10-12 17:57:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 17:57:27,666 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 288 transitions. [2020-10-12 17:57:27,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 17:57:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 288 transitions. [2020-10-12 17:57:27,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 17:57:27,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:57:27,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 17:57:27,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 17:57:27,673 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:57:27,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:57:27,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1925619755, now seen corresponding path program 1 times [2020-10-12 17:57:27,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:57:27,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194080761] [2020-10-12 17:57:27,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:57:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:27,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:27,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:30,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:32,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:32,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 17:57:32,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 17:57:32,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 17:57:32,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:32,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 17:57:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 17:57:32,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:33,003 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 17:57:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 17:57:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:33,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:33,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:33,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:33,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 17:57:33,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:33,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 17:57:33,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:33,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 17:57:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:33,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:33,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:33,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:33,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:33,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 17:57:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:33,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:33,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:33,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:33,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 17:57:33,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:33,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 17:57:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:33,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:33,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:33,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:33,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:33,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 17:57:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:33,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:33,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:33,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:33,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:33,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:33,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 17:57:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:33,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:33,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:33,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 17:57:33,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 17:57:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 17:57:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 17:57:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:33,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 17:57:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:33,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:33,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:33,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:33,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:33,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 17:57:33,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:33,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:33,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 17:57:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:33,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:33,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:33,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:33,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 17:57:33,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 17:57:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 17:57:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:33,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:33,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:33,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:33,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:33,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:33,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:33,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 17:57:33,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194080761] [2020-10-12 17:57:33,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 17:57:33,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 17:57:33,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664511318] [2020-10-12 17:57:33,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 17:57:33,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 17:57:33,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 17:57:33,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 17:57:33,291 INFO L87 Difference]: Start difference. First operand 234 states and 288 transitions. Second operand 10 states. [2020-10-12 17:57:33,835 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:57:34,496 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:57:35,172 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 17:57:35,599 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 187 [2020-10-12 17:57:36,119 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 17:57:36,486 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:57:36,764 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:57:37,188 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 17:57:37,988 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 190 [2020-10-12 17:57:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 17:57:40,456 INFO L93 Difference]: Finished difference Result 728 states and 976 transitions. [2020-10-12 17:57:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 17:57:40,457 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-12 17:57:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 17:57:40,465 INFO L225 Difference]: With dead ends: 728 [2020-10-12 17:57:40,466 INFO L226 Difference]: Without dead ends: 575 [2020-10-12 17:57:40,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-10-12 17:57:40,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-12 17:57:40,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 406. [2020-10-12 17:57:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-12 17:57:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 490 transitions. [2020-10-12 17:57:40,584 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 490 transitions. Word has length 57 [2020-10-12 17:57:40,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 17:57:40,584 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 490 transitions. [2020-10-12 17:57:40,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 17:57:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 490 transitions. [2020-10-12 17:57:40,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 17:57:40,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:57:40,589 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] [2020-10-12 17:57:40,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 17:57:40,589 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:57:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:57:40,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1407336957, now seen corresponding path program 1 times [2020-10-12 17:57:40,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:57:40,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196571277] [2020-10-12 17:57:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:57:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 17:57:41,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-12 17:57:41,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 17:57:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 17:57:41,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,449 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 17:57:41,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 17:57:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 17:57:41,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 17:57:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 17:57:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:41,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:41,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:41,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 17:57:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:41,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:41,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 17:57:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:41,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:41,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 17:57:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:41,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:41,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 17:57:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:41,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:41,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 17:57:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:41,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:41,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 17:57:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:41,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:41,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 17:57:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 17:57:41,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 17:57:41,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196571277] [2020-10-12 17:57:41,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 17:57:41,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 17:57:41,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885192183] [2020-10-12 17:57:41,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 17:57:41,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 17:57:41,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 17:57:41,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 17:57:41,617 INFO L87 Difference]: Start difference. First operand 406 states and 490 transitions. Second operand 5 states. [2020-10-12 17:57:41,905 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:57:43,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 17:57:43,075 INFO L93 Difference]: Finished difference Result 854 states and 1074 transitions. [2020-10-12 17:57:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 17:57:43,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-12 17:57:43,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 17:57:43,081 INFO L225 Difference]: With dead ends: 854 [2020-10-12 17:57:43,081 INFO L226 Difference]: Without dead ends: 472 [2020-10-12 17:57:43,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 17:57:43,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-12 17:57:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 406. [2020-10-12 17:57:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-12 17:57:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 485 transitions. [2020-10-12 17:57:43,178 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 485 transitions. Word has length 62 [2020-10-12 17:57:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 17:57:43,178 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 485 transitions. [2020-10-12 17:57:43,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 17:57:43,179 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 485 transitions. [2020-10-12 17:57:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 17:57:43,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:57:43,182 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] [2020-10-12 17:57:43,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 17:57:43,183 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:57:43,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:57:43,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1511330786, now seen corresponding path program 1 times [2020-10-12 17:57:43,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:57:43,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083651826] [2020-10-12 17:57:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:57:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 17:57:43,224 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 17:57:43,224 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 17:57:43,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 17:57:43,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 05:57:43 BoogieIcfgContainer [2020-10-12 17:57:43,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 17:57:43,253 INFO L168 Benchmark]: Toolchain (without parser) took 25909.16 ms. Allocated memory was 142.1 MB in the beginning and 545.8 MB in the end (delta: 403.7 MB). Free memory was 104.0 MB in the beginning and 272.6 MB in the end (delta: -168.6 MB). Peak memory consumption was 235.1 MB. Max. memory is 7.1 GB. [2020-10-12 17:57:43,253 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 17:57:43,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 845.63 ms. Allocated memory was 142.1 MB in the beginning and 208.7 MB in the end (delta: 66.6 MB). Free memory was 103.8 MB in the beginning and 177.8 MB in the end (delta: -74.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-10-12 17:57:43,255 INFO L168 Benchmark]: Boogie Preprocessor took 89.97 ms. Allocated memory is still 208.7 MB. Free memory was 177.8 MB in the beginning and 173.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-12 17:57:43,256 INFO L168 Benchmark]: RCFGBuilder took 1058.98 ms. Allocated memory was 208.7 MB in the beginning and 232.3 MB in the end (delta: 23.6 MB). Free memory was 173.8 MB in the beginning and 191.7 MB in the end (delta: -17.8 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-10-12 17:57:43,257 INFO L168 Benchmark]: TraceAbstraction took 23908.86 ms. Allocated memory was 232.3 MB in the beginning and 545.8 MB in the end (delta: 313.5 MB). Free memory was 190.4 MB in the beginning and 272.6 MB in the end (delta: -82.2 MB). Peak memory consumption was 231.3 MB. Max. memory is 7.1 GB. [2020-10-12 17:57:43,261 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 845.63 ms. Allocated memory was 142.1 MB in the beginning and 208.7 MB in the end (delta: 66.6 MB). Free memory was 103.8 MB in the beginning and 177.8 MB in the end (delta: -74.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.97 ms. Allocated memory is still 208.7 MB. Free memory was 177.8 MB in the beginning and 173.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1058.98 ms. Allocated memory was 208.7 MB in the beginning and 232.3 MB in the end (delta: 23.6 MB). Free memory was 173.8 MB in the beginning and 191.7 MB in the end (delta: -17.8 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23908.86 ms. Allocated memory was 232.3 MB in the beginning and 545.8 MB in the end (delta: 313.5 MB). Free memory was 190.4 MB in the beginning and 272.6 MB in the end (delta: -82.2 MB). Peak memory consumption was 231.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L145] int cleanupTimeShifts = 4; [L286] int pumpRunning = 0; [L287] int systemActive = 1; [L709] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L224] int retValue_acc ; [L225] int tmp ; [L229] FCALL select_helpers() [L230] FCALL select_features() [L231] CALL, EXPR valid_product() [L273] int retValue_acc ; [L276] retValue_acc = 1 [L277] return (retValue_acc); [L231] RET, EXPR valid_product() [L231] tmp = valid_product() [L233] COND TRUE \read(tmp) [L235] FCALL setup() [L236] CALL runTest() [L215] CALL test() [L474] int splverifierCounter ; [L475] int tmp ; [L476] int tmp___0 ; [L477] int tmp___1 ; [L478] int tmp___2 ; [L481] splverifierCounter = 0 [L483] COND TRUE 1 [L485] COND TRUE splverifierCounter < 4 [L491] tmp = __VERIFIER_nondet_int() [L493] COND TRUE \read(tmp) [L495] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L495] RET waterRise() [L501] tmp___0 = __VERIFIER_nondet_int() [L503] COND FALSE !(\read(tmp___0)) [L511] tmp___2 = __VERIFIER_nondet_int() [L513] COND FALSE !(\read(tmp___2)) [L519] tmp___1 = __VERIFIER_nondet_int() [L521] COND TRUE \read(tmp___1) [L528] CALL timeShift() [L294] COND FALSE !(\read(pumpRunning)) [L301] COND TRUE \read(systemActive) [L303] CALL processEnvironment() [L349] int tmp ; [L352] COND FALSE !(\read(pumpRunning)) [L367] CALL processEnvironment__wrappee__lowWaterSensor() [L323] int tmp ; [L326] COND FALSE !(\read(pumpRunning)) [L341] FCALL processEnvironment__wrappee__base() [L367] RET processEnvironment__wrappee__lowWaterSensor() [L303] RET processEnvironment() [L309] CALL __utac_acc__Specification3_spec__1() [L907] int tmp ; [L908] int tmp___0 ; [L909] int tmp___1 ; [L913] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L913] RET, EXPR isMethaneLevelCritical() [L913] tmp = isMethaneLevelCritical() [L915] COND FALSE !(\read(tmp)) [L919] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L919] RET, EXPR getWaterLevel() [L919] tmp___0 = getWaterLevel() [L921] COND TRUE tmp___0 == 2 [L923] CALL, EXPR isPumpRunning() [L401] int retValue_acc ; [L404] retValue_acc = pumpRunning [L405] return (retValue_acc); [L923] RET, EXPR isPumpRunning() [L923] tmp___1 = isPumpRunning() [L925] COND FALSE !(\read(tmp___1)) [L929] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 488 SDtfs, 1005 SDslu, 597 SDs, 0 SdLazy, 2775 SolverSat, 702 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=406occurred 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, 3 MinimizatonAttempts, 274 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 246 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 52228 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...