/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_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 17:57:34,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 17:57:34,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 17:57:34,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 17:57:34,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 17:57:34,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 17:57:34,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 17:57:34,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 17:57:34,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 17:57:34,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 17:57:34,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 17:57:34,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 17:57:34,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 17:57:34,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 17:57:34,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 17:57:34,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 17:57:34,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 17:57:34,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 17:57:34,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 17:57:34,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 17:57:34,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 17:57:34,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 17:57:34,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 17:57:34,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 17:57:34,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 17:57:34,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 17:57:34,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 17:57:34,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 17:57:34,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 17:57:34,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 17:57:34,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 17:57:34,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 17:57:34,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 17:57:34,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 17:57:34,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 17:57:34,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 17:57:34,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 17:57:34,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 17:57:34,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 17:57:34,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 17:57:34,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 17:57:34,170 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 17:57:34,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 17:57:34,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 17:57:34,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 17:57:34,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 17:57:34,222 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 17:57:34,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 17:57:34,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 17:57:34,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 17:57:34,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 17:57:34,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 17:57:34,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 17:57:34,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 17:57:34,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 17:57:34,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 17:57:34,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 17:57:34,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 17:57:34,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 17:57:34,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 17:57:34,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 17:57:34,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 17:57:34,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 17:57:34,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 17:57:34,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 17:57:34,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 17:57:34,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 17:57:34,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 17:57:34,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 17:57:34,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 17:57:34,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 17:57:34,231 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 17:57:34,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 17:57:34,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 17:57:34,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 17:57:34,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 17:57:34,583 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 17:57:34,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2020-10-12 17:57:34,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1ed2e8e3/c607a4e86afc4d18ba151318486ed7b3/FLAG50544d69d [2020-10-12 17:57:35,127 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 17:57:35,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2020-10-12 17:57:35,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1ed2e8e3/c607a4e86afc4d18ba151318486ed7b3/FLAG50544d69d [2020-10-12 17:57:35,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1ed2e8e3/c607a4e86afc4d18ba151318486ed7b3 [2020-10-12 17:57:35,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 17:57:35,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 17:57:35,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 17:57:35,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 17:57:35,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 17:57:35,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:57:35" (1/1) ... [2020-10-12 17:57:35,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:35, skipping insertion in model container [2020-10-12 17:57:35,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:57:35" (1/1) ... [2020-10-12 17:57:35,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 17:57:35,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 17:57:35,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 17:57:35,966 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 17:57:36,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 17:57:36,106 INFO L208 MainTranslator]: Completed translation [2020-10-12 17:57:36,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:36 WrapperNode [2020-10-12 17:57:36,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 17:57:36,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 17:57:36,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 17:57:36,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 17:57:36,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:36" (1/1) ... [2020-10-12 17:57:36,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:36" (1/1) ... [2020-10-12 17:57:36,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:36" (1/1) ... [2020-10-12 17:57:36,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:36" (1/1) ... [2020-10-12 17:57:36,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:36" (1/1) ... [2020-10-12 17:57:36,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:36" (1/1) ... [2020-10-12 17:57:36,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:36" (1/1) ... [2020-10-12 17:57:36,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 17:57:36,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 17:57:36,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 17:57:36,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 17:57:36,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:36" (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 17:57:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 17:57:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 17:57:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-12 17:57:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-12 17:57:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-12 17:57:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-12 17:57:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-12 17:57:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-12 17:57:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-12 17:57:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-12 17:57:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-12 17:57:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-12 17:57:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-12 17:57:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-12 17:57:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-12 17:57:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-12 17:57:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-12 17:57:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-12 17:57:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-12 17:57:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-12 17:57:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-12 17:57:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-12 17:57:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-12 17:57:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-12 17:57:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-12 17:57:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-12 17:57:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-12 17:57:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-12 17:57:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-12 17:57:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-12 17:57:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-12 17:57:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-12 17:57:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-12 17:57:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-12 17:57:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-12 17:57:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-12 17:57:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-12 17:57:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-12 17:57:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 17:57:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 17:57:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 17:57:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-12 17:57:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-12 17:57:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-12 17:57:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-12 17:57:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-12 17:57:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-12 17:57:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-12 17:57:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-12 17:57:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-12 17:57:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-12 17:57:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-12 17:57:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-12 17:57:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-12 17:57:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-12 17:57:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-12 17:57:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-12 17:57:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-12 17:57:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-12 17:57:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-12 17:57:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-12 17:57:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-12 17:57:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 17:57:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-12 17:57:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-12 17:57:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-12 17:57:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-12 17:57:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-12 17:57:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-12 17:57:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-12 17:57:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 17:57:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 17:57:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-12 17:57:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 17:57:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 17:57:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 17:57:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 17:57:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-12 17:57:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 17:57:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-12 17:57:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-12 17:57:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 17:57:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-12 17:57:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-12 17:57:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-12 17:57:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-12 17:57:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-12 17:57:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-12 17:57:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 17:57:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 17:57:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-12 17:57:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 17:57:37,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 17:57:37,364 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-12 17:57:37,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:57:37 BoogieIcfgContainer [2020-10-12 17:57:37,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 17:57:37,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 17:57:37,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 17:57:37,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 17:57:37,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:57:35" (1/3) ... [2020-10-12 17:57:37,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2dcc47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:57:37, skipping insertion in model container [2020-10-12 17:57:37,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:57:36" (2/3) ... [2020-10-12 17:57:37,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2dcc47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:57:37, skipping insertion in model container [2020-10-12 17:57:37,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:57:37" (3/3) ... [2020-10-12 17:57:37,378 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product27.cil.c [2020-10-12 17:57:37,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 17:57:37,396 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 17:57:37,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 17:57:37,436 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 17:57:37,437 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 17:57:37,437 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 17:57:37,437 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 17:57:37,437 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 17:57:37,438 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 17:57:37,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 17:57:37,438 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 17:57:37,461 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-10-12 17:57:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 17:57:37,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:57:37,473 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 17:57:37,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:57:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:57:37,480 INFO L82 PathProgramCache]: Analyzing trace with hash -527888635, now seen corresponding path program 1 times [2020-10-12 17:57:37,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:57:37,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575496965] [2020-10-12 17:57:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:57:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:37,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:37,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:40,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:40,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 17:57:40,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 17:57:40,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2553 [2020-10-12 17:57:40,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:40,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 17:57:40,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:40,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 17:57:40,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 17:57:40,920 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 17:57:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 17:57:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 17:57:41,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 17:57:41,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 17:57:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:41,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 17:57:41,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 17:57:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:41,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 17:57:41,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:41,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 17:57:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 17:57:41,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 17:57:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:41,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 17:57:41,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:41,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 17:57:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 17:57:41,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:41,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 17:57:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 17:57:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 17:57:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 17:57:41,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 17:57:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:41,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:41,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:41,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:41,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:41,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:41,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:41,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:41,235 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 17:57:41,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575496965] [2020-10-12 17:57:41,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 17:57:41,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 17:57:41,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164223799] [2020-10-12 17:57:41,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 17:57:41,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 17:57:41,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 17:57:41,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 17:57:41,266 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 7 states. [2020-10-12 17:57:41,906 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:57:43,474 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-10-12 17:57:43,873 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 17:57:44,154 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 17:57:44,429 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 17:57:44,821 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:57:45,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 17:57:45,676 INFO L93 Difference]: Finished difference Result 383 states and 521 transitions. [2020-10-12 17:57:45,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 17:57:45,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-12 17:57:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 17:57:45,694 INFO L225 Difference]: With dead ends: 383 [2020-10-12 17:57:45,694 INFO L226 Difference]: Without dead ends: 245 [2020-10-12 17:57:45,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-12 17:57:45,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-12 17:57:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 206. [2020-10-12 17:57:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-12 17:57:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 253 transitions. [2020-10-12 17:57:45,818 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 253 transitions. Word has length 52 [2020-10-12 17:57:45,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 17:57:45,818 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 253 transitions. [2020-10-12 17:57:45,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 17:57:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 253 transitions. [2020-10-12 17:57:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 17:57:45,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:57:45,824 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 17:57:45,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 17:57:45,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:57:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:57:45,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1119270441, now seen corresponding path program 1 times [2020-10-12 17:57:45,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:57:45,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489432778] [2020-10-12 17:57:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:57:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:45,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:46,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:48,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:50,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 17:57:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 17:57:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 17:57:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 17:57:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 17:57:50,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:51,300 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 17:57:51,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 17:57:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:51,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:51,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:51,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 17:57:51,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 17:57:51,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 17:57:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:51,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:51,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:51,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:51,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:51,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 17:57:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:51,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:51,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:51,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:51,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:51,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:51,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:51,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 17:57:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:51,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:51,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:51,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:51,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 17:57:51,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:51,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:51,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:51,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:51,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 17:57:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:51,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:51,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:51,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:51,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:51,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:51,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:51,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:51,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 17:57:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:51,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:51,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:51,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:51,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 17:57:51,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 17:57:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 17:57:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 17:57:51,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:51,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 17:57:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:51,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:51,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:51,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:51,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 17:57:51,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:51,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:51,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:51,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 17:57:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:51,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:51,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:51,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:51,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 17:57:51,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 17:57:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 17:57:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 17:57:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:51,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:51,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:51,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:51,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:51,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:51,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:51,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 17:57:51,715 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 17:57:51,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489432778] [2020-10-12 17:57:51,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 17:57:51,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 17:57:51,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190749075] [2020-10-12 17:57:51,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 17:57:51,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 17:57:51,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 17:57:51,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 17:57:51,721 INFO L87 Difference]: Start difference. First operand 206 states and 253 transitions. Second operand 10 states. [2020-10-12 17:57:52,279 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:57:53,321 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:57:54,021 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 17:57:54,557 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 17:57:54,922 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:57:55,372 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 17:57:55,658 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 17:57:57,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 17:57:57,342 INFO L93 Difference]: Finished difference Result 561 states and 752 transitions. [2020-10-12 17:57:57,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 17:57:57,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-12 17:57:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 17:57:57,356 INFO L225 Difference]: With dead ends: 561 [2020-10-12 17:57:57,356 INFO L226 Difference]: Without dead ends: 423 [2020-10-12 17:57:57,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-12 17:57:57,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-12 17:57:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 354. [2020-10-12 17:57:57,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-12 17:57:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 426 transitions. [2020-10-12 17:57:57,469 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 426 transitions. Word has length 57 [2020-10-12 17:57:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 17:57:57,470 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 426 transitions. [2020-10-12 17:57:57,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 17:57:57,470 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 426 transitions. [2020-10-12 17:57:57,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 17:57:57,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:57:57,474 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] [2020-10-12 17:57:57,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 17:57:57,474 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:57:57,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:57:57,474 INFO L82 PathProgramCache]: Analyzing trace with hash -212747975, now seen corresponding path program 1 times [2020-10-12 17:57:57,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:57:57,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654788319] [2020-10-12 17:57:57,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:57:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:58,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:58,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 17:57:58,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:58,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-12 17:57:58,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:58,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 17:57:58,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:58,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 17:57:58,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:58,278 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 17:57:58,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 17:57:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:58,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:58,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:58,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:58,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 17:57:58,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 17:57:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:58,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 17:57:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:58,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:58,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:58,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:58,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:58,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:58,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:58,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:58,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 17:57:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:58,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:58,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:58,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:58,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:58,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:58,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 17:57:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:58,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:58,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:58,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:58,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:58,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:58,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:58,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:58,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:58,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 17:57:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:58,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:58,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 17:57:58,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:58,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 17:57:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:58,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 17:57:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:58,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:58,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:58,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:58,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 17:57:58,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:58,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 17:57:58,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 17:57:58,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 17:57:58,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:58,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 17:57:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:58,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:58,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:58,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:58,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:58,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:58,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:58,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 17:57:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:58,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:58,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:58,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:58,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:58,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:58,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 17:57:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 17:57:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 17:57:58,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 17:57:58,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 17:57:58,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 17:57:58,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 17:57:58,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 17:57:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 17:57:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 17:57:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 17:57:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 17:57:58,446 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 17:57:58,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654788319] [2020-10-12 17:57:58,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 17:57:58,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 17:57:58,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41501282] [2020-10-12 17:57:58,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 17:57:58,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 17:57:58,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 17:57:58,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 17:57:58,449 INFO L87 Difference]: Start difference. First operand 354 states and 426 transitions. Second operand 5 states. [2020-10-12 17:57:58,779 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 17:58:00,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 17:58:00,681 INFO L93 Difference]: Finished difference Result 1117 states and 1408 transitions. [2020-10-12 17:58:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 17:58:00,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-12 17:58:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 17:58:00,691 INFO L225 Difference]: With dead ends: 1117 [2020-10-12 17:58:00,691 INFO L226 Difference]: Without dead ends: 787 [2020-10-12 17:58:00,693 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 17:58:00,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-10-12 17:58:00,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 669. [2020-10-12 17:58:00,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-10-12 17:58:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 813 transitions. [2020-10-12 17:58:00,880 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 813 transitions. Word has length 61 [2020-10-12 17:58:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 17:58:00,882 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 813 transitions. [2020-10-12 17:58:00,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 17:58:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 813 transitions. [2020-10-12 17:58:00,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 17:58:00,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 17:58:00,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 17:58:00,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 17:58:00,888 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 17:58:00,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 17:58:00,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1867456273, now seen corresponding path program 1 times [2020-10-12 17:58:00,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 17:58:00,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175599511] [2020-10-12 17:58:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 17:58:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 17:58:00,932 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 17:58:00,932 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 17:58:00,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 17:58:00,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 05:58:00 BoogieIcfgContainer [2020-10-12 17:58:00,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 17:58:00,974 INFO L168 Benchmark]: Toolchain (without parser) took 25486.44 ms. Allocated memory was 137.4 MB in the beginning and 570.4 MB in the end (delta: 433.1 MB). Free memory was 99.1 MB in the beginning and 102.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 430.0 MB. Max. memory is 7.1 GB. [2020-10-12 17:58:00,977 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 17:58:00,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 618.53 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 98.9 MB in the beginning and 168.1 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-10-12 17:58:00,984 INFO L168 Benchmark]: Boogie Preprocessor took 90.83 ms. Allocated memory is still 200.3 MB. Free memory was 168.1 MB in the beginning and 163.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-10-12 17:58:00,985 INFO L168 Benchmark]: RCFGBuilder took 1170.42 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 163.8 MB in the beginning and 194.5 MB in the end (delta: -30.7 MB). Peak memory consumption was 87.3 MB. Max. memory is 7.1 GB. [2020-10-12 17:58:00,989 INFO L168 Benchmark]: TraceAbstraction took 23599.72 ms. Allocated memory was 229.6 MB in the beginning and 570.4 MB in the end (delta: 340.8 MB). Free memory was 194.5 MB in the beginning and 102.1 MB in the end (delta: 92.3 MB). Peak memory consumption was 433.1 MB. Max. memory is 7.1 GB. [2020-10-12 17:58:00,999 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 618.53 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 98.9 MB in the beginning and 168.1 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.83 ms. Allocated memory is still 200.3 MB. Free memory was 168.1 MB in the beginning and 163.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1170.42 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 163.8 MB in the beginning and 194.5 MB in the end (delta: -30.7 MB). Peak memory consumption was 87.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23599.72 ms. Allocated memory was 229.6 MB in the beginning and 570.4 MB in the end (delta: 340.8 MB). Free memory was 194.5 MB in the beginning and 102.1 MB in the end (delta: 92.3 MB). Peak memory consumption was 433.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 346]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L558] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L755] int waterLevel = 1; [L756] int methaneLevelCritical = 0; [L844] int cleanupTimeShifts = 4; [L917] int retValue_acc ; [L918] int tmp ; [L922] FCALL select_helpers() [L923] FCALL select_features() [L924] CALL, EXPR valid_product() [L380] int retValue_acc ; [L383] retValue_acc = 1 [L384] return (retValue_acc); [L924] RET, EXPR valid_product() [L924] tmp = valid_product() [L926] COND TRUE \read(tmp) [L928] FCALL setup() [L929] CALL runTest() [L911] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L773] COND TRUE waterLevel < 2 [L774] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___2)) [L89] tmp___1 = __VERIFIER_nondet_int() [L91] COND TRUE \read(tmp___1) [L93] CALL stopSystem() [L294] COND FALSE !(\read(pumpRunning)) [L301] systemActive = 0 [L93] RET stopSystem() [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND FALSE !(\read(systemActive)) [L143] CALL __utac_acc__Specification3_spec__1() [L309] int tmp ; [L310] int tmp___0 ; [L311] int tmp___1 ; [L315] CALL, EXPR isMethaneLevelCritical() [L794] int retValue_acc ; [L797] retValue_acc = methaneLevelCritical [L798] return (retValue_acc); [L315] RET, EXPR isMethaneLevelCritical() [L315] tmp = isMethaneLevelCritical() [L317] COND FALSE !(\read(tmp)) [L321] CALL, EXPR getWaterLevel() [L826] int retValue_acc ; [L829] retValue_acc = waterLevel [L830] return (retValue_acc); [L321] RET, EXPR getWaterLevel() [L321] tmp___0 = getWaterLevel() [L323] COND TRUE tmp___0 == 2 [L325] CALL, EXPR isPumpRunning() [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); [L325] RET, EXPR isPumpRunning() [L325] tmp___1 = isPumpRunning() [L327] COND FALSE !(\read(tmp___1)) [L331] CALL __automaton_fail() [L346] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 463 SDtfs, 899 SDslu, 596 SDs, 0 SdLazy, 2403 SolverSat, 555 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=669occurred in iteration=3, 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, 226 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 51964 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...