/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:10:09,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:10:09,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:10:09,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:10:09,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:10:09,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:10:09,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:10:09,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:10:09,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:10:09,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:10:09,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:10:09,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:10:09,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:10:09,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:10:09,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:10:09,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:10:09,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:10:09,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:10:09,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:10:09,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:10:09,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:10:09,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:10:09,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:10:09,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:10:09,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:10:09,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:10:09,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:10:09,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:10:09,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:10:09,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:10:09,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:10:09,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:10:09,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:10:09,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:10:09,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:10:09,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:10:09,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:10:09,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:10:09,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:10:09,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:10:09,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:10:09,225 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 [2020-10-14 07:10:09,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:10:09,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:10:09,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:10:09,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:10:09,264 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:10:09,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:10:09,264 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:10:09,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:10:09,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:10:09,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:10:09,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:10:09,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:10:09,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:10:09,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:10:09,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:10:09,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:10:09,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:10:09,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:10:09,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:10:09,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:10:09,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:10:09,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:10:09,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:10:09,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:10:09,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:10:09,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:10:09,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:10:09,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:10:09,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:10:09,270 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 07:10:09,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:10:09,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:10:09,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:10:09,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:10:09,603 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:10:09,604 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-10-14 07:10:09,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6aae7672/80c910eebf6c4fcf8cefbcd4eea74951/FLAG292da2389 [2020-10-14 07:10:10,143 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:10:10,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-10-14 07:10:10,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6aae7672/80c910eebf6c4fcf8cefbcd4eea74951/FLAG292da2389 [2020-10-14 07:10:10,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6aae7672/80c910eebf6c4fcf8cefbcd4eea74951 [2020-10-14 07:10:10,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:10:10,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:10:10,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:10:10,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:10:10,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:10:10,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:10:10" (1/1) ... [2020-10-14 07:10:10,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b44b751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:10, skipping insertion in model container [2020-10-14 07:10:10,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:10:10" (1/1) ... [2020-10-14 07:10:10,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:10:10,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:10:10,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:10:10,968 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:10:11,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:10:11,137 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:10:11,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11 WrapperNode [2020-10-14 07:10:11,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:10:11,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:10:11,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:10:11,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:10:11,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 07:10:11,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 07:10:11,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 07:10:11,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 07:10:11,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 07:10:11,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 07:10:11,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (1/1) ... [2020-10-14 07:10:11,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:10:11,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:10:11,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:10:11,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:10:11,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (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 [2020-10-14 07:10:11,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:10:11,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:10:11,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-14 07:10:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-14 07:10:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-14 07:10:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-14 07:10:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-14 07:10:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-14 07:10:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-14 07:10:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-14 07:10:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-14 07:10:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-14 07:10:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-14 07:10:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-14 07:10:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-14 07:10:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-14 07:10:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-14 07:10:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-14 07:10:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-14 07:10:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:10:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-14 07:10:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-14 07:10:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-14 07:10:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-14 07:10:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-14 07:10:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-14 07:10:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-14 07:10:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-14 07:10:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-14 07:10:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-14 07:10:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-14 07:10:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-14 07:10:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-14 07:10:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-14 07:10:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-14 07:10:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-14 07:10:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-14 07:10:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-14 07:10:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:10:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:10:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-14 07:10:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-14 07:10:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-14 07:10:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-14 07:10:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-14 07:10:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-14 07:10:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-14 07:10:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-14 07:10:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-14 07:10:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-14 07:10:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-14 07:10:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 07:10:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 07:10:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-14 07:10:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 07:10:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 07:10:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 07:10:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 07:10:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-14 07:10:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 07:10:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-14 07:10:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-14 07:10:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 07:10:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-14 07:10:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-14 07:10:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 07:10:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-14 07:10:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-14 07:10:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-14 07:10:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-14 07:10:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-14 07:10:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-14 07:10:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-14 07:10:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-14 07:10:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-14 07:10:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-14 07:10:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:10:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-14 07:10:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-14 07:10:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-14 07:10:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-14 07:10:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-14 07:10:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-14 07:10:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-14 07:10:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-14 07:10:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-14 07:10:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-14 07:10:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:10:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-14 07:10:11,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:10:12,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:10:12,335 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-14 07:10:12,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:10:12 BoogieIcfgContainer [2020-10-14 07:10:12,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:10:12,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:10:12,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:10:12,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:10:12,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:10:10" (1/3) ... [2020-10-14 07:10:12,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfb2699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:10:12, skipping insertion in model container [2020-10-14 07:10:12,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:11" (2/3) ... [2020-10-14 07:10:12,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfb2699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:10:12, skipping insertion in model container [2020-10-14 07:10:12,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:10:12" (3/3) ... [2020-10-14 07:10:12,348 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product19.cil.c [2020-10-14 07:10:12,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:10:12,366 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:10:12,379 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:10:12,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:10:12,403 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:10:12,403 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:10:12,403 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:10:12,404 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:10:12,404 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:10:12,404 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:10:12,404 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:10:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-14 07:10:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 07:10:12,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:10:12,436 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] [2020-10-14 07:10:12,436 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:10:12,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:10:12,442 INFO L82 PathProgramCache]: Analyzing trace with hash 506531791, now seen corresponding path program 1 times [2020-10-14 07:10:12,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:10:12,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887899596] [2020-10-14 07:10:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:10:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:12,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:13,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:15,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:15,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 07:10:15,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:10:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2570 [2020-10-14 07:10:15,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:15,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 07:10:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 07:10:15,672 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 07:10:15,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:10:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:15,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:15,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:15,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:15,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:10:15,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:15,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:15,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:10:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:15,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:15,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:15,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:15,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:15,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:15,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:15,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:15,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:10:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:15,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:15,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:15,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:15,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:15,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:15,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:15,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:15,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:15,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:15,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:15,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:15,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 07:10:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:15,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:15,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:15,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:15,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:15,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:15,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:15,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:10:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:15,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:15,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:15,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:15,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:15,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:15,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:15,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:10:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:15,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:15,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:15,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:15,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:15,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:15,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:15,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:15,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:10:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:15,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:15,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:15,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:15,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:15,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:15,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:15,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:10:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:15,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:15,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:15,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:15,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:15,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:15,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:10:15,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887899596] [2020-10-14 07:10:15,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:10:15,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 07:10:15,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764242261] [2020-10-14 07:10:15,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:10:15,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:10:15,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:10:15,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:10:15,846 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 3 states. [2020-10-14 07:10:16,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:10:16,933 INFO L93 Difference]: Finished difference Result 273 states and 360 transitions. [2020-10-14 07:10:16,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:10:16,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-10-14 07:10:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:10:16,950 INFO L225 Difference]: With dead ends: 273 [2020-10-14 07:10:16,951 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 07:10:16,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:10:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 07:10:17,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-14 07:10:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 07:10:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-10-14 07:10:17,061 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 52 [2020-10-14 07:10:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:10:17,062 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-10-14 07:10:17,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:10:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-10-14 07:10:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 07:10:17,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:10:17,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:10:17,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:10:17,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:10:17,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:10:17,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1226284601, now seen corresponding path program 1 times [2020-10-14 07:10:17,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:10:17,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97843290] [2020-10-14 07:10:17,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:10:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:17,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:17,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 07:10:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:10:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2359 [2020-10-14 07:10:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:19,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:10:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 07:10:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:19,721 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 07:10:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:10:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:19,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:19,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:19,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:19,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:19,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 07:10:19,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:19,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:19,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:19,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:10:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:19,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:19,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:19,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:19,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:19,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:19,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:19,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:10:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:19,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:19,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:19,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:19,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:19,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:19,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:19,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:19,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 07:10:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:19,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:19,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:19,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:19,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:19,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:10:19,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:19,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:19,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:10:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:19,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:19,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:19,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:19,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:19,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:19,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 24 [2020-10-14 07:10:19,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:10:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:19,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:19,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:19,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:19,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:19,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:19,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:19,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 07:10:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:19,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:19,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:19,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:19,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:19,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:19,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:19,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:19,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:19,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 07:10:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:19,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:19,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:19,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:19,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:19,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:10:19,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97843290] [2020-10-14 07:10:19,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:10:19,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:10:19,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809199204] [2020-10-14 07:10:19,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:10:19,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:10:19,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:10:19,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:10:19,865 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 4 states. [2020-10-14 07:10:20,253 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 07:10:20,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:10:20,866 INFO L93 Difference]: Finished difference Result 200 states and 243 transitions. [2020-10-14 07:10:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:10:20,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 07:10:20,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:10:20,869 INFO L225 Difference]: With dead ends: 200 [2020-10-14 07:10:20,869 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 07:10:20,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:10:20,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 07:10:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2020-10-14 07:10:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 07:10:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-10-14 07:10:20,934 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 53 [2020-10-14 07:10:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:10:20,934 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-10-14 07:10:20,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:10:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-10-14 07:10:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 07:10:20,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:10:20,937 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] [2020-10-14 07:10:20,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:10:20,937 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:10:20,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:10:20,937 INFO L82 PathProgramCache]: Analyzing trace with hash -860632419, now seen corresponding path program 1 times [2020-10-14 07:10:20,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:10:20,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605178487] [2020-10-14 07:10:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:10:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:20,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:22,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:22,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 07:10:22,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:10:22,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-14 07:10:22,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:22,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:10:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 07:10:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:22,828 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 07:10:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:10:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:22,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:22,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:22,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:22,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:22,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 07:10:22,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:22,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:10:22,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:22,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:10:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:22,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:22,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:22,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:22,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:22,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:10:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:22,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:10:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:22,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:22,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:22,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:22,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:22,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:22,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:10:23,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:23,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 07:10:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:23,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:23,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:23,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:23,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:10:23,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:23,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:10:23,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:23,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:10:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:23,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:23,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:23,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:23,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:23,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:23,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:10:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:23,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:10:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:23,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:23,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:23,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:23,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:23,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:23,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:23,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:23,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:10:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:23,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:23,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:23,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:23,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:23,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:23,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:10:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:23,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:23,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:23,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:23,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:23,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:23,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:23,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:23,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:23,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:10:23,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605178487] [2020-10-14 07:10:23,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:10:23,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:10:23,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546798982] [2020-10-14 07:10:23,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:10:23,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:10:23,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:10:23,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:10:23,056 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 4 states. [2020-10-14 07:10:23,492 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-14 07:10:25,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:10:25,092 INFO L93 Difference]: Finished difference Result 308 states and 380 transitions. [2020-10-14 07:10:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:10:25,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 07:10:25,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:10:25,098 INFO L225 Difference]: With dead ends: 308 [2020-10-14 07:10:25,098 INFO L226 Difference]: Without dead ends: 225 [2020-10-14 07:10:25,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:10:25,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-14 07:10:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 184. [2020-10-14 07:10:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 07:10:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 219 transitions. [2020-10-14 07:10:25,204 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 219 transitions. Word has length 57 [2020-10-14 07:10:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:10:25,205 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 219 transitions. [2020-10-14 07:10:25,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:10:25,205 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 219 transitions. [2020-10-14 07:10:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 07:10:25,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:10:25,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:10:25,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:10:25,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:10:25,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:10:25,216 INFO L82 PathProgramCache]: Analyzing trace with hash -792004887, now seen corresponding path program 1 times [2020-10-14 07:10:25,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:10:25,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057836748] [2020-10-14 07:10:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:10:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:25,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:26,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:26,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 07:10:26,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:26,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-14 07:10:26,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:26,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:10:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 07:10:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:10:26,833 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 07:10:26,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:10:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:26,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:26,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:26,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 07:10:26,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:26,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:10:26,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:26,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:10:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:26,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:26,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:26,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:26,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:10:26,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:26,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:10:26,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:26,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:10:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:26,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:26,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:26,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:26,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:26,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:26,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:26,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:10:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:27,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 07:10:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:27,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:27,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:27,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:10:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:27,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:10:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:10:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:27,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:27,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:27,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:27,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:27,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:10:27,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:27,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:10:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:27,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:10:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:27,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:27,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:27,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:10:27,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:27,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:10:27,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:27,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:10:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:27,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:10:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:27,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:27,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:27,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:27,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:27,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:27,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:10:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:27,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:10:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:27,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:27,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:27,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:10:27,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:27,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:10:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:10:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:27,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 07:10:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:27,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:27,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:27,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:27,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:27,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:27,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:27,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:27,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:27,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 07:10:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:27,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:10:27,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057836748] [2020-10-14 07:10:27,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:10:27,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 07:10:27,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711449458] [2020-10-14 07:10:27,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:10:27,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:10:27,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:10:27,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:10:27,136 INFO L87 Difference]: Start difference. First operand 184 states and 219 transitions. Second operand 8 states. [2020-10-14 07:10:27,724 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-14 07:10:28,962 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 07:10:29,239 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 07:10:29,500 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 07:10:29,765 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 07:10:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:10:30,276 INFO L93 Difference]: Finished difference Result 564 states and 736 transitions. [2020-10-14 07:10:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:10:30,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-14 07:10:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:10:30,286 INFO L225 Difference]: With dead ends: 564 [2020-10-14 07:10:30,287 INFO L226 Difference]: Without dead ends: 404 [2020-10-14 07:10:30,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:10:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-14 07:10:30,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 343. [2020-10-14 07:10:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-14 07:10:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 419 transitions. [2020-10-14 07:10:30,403 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 419 transitions. Word has length 63 [2020-10-14 07:10:30,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:10:30,404 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 419 transitions. [2020-10-14 07:10:30,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:10:30,405 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 419 transitions. [2020-10-14 07:10:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 07:10:30,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:10:30,409 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] [2020-10-14 07:10:30,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:10:30,409 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:10:30,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:10:30,410 INFO L82 PathProgramCache]: Analyzing trace with hash -328985137, now seen corresponding path program 1 times [2020-10-14 07:10:30,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:10:30,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017904514] [2020-10-14 07:10:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:10:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:30,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:30,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:34,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 07:10:35,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:10:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 07:10:35,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:10:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 07:10:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 07:10:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,722 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 07:10:35,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:10:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:35,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:35,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:35,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:10:35,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:35,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:35,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:35,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:10:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:35,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:35,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:10:35,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:10:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:35,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:10:35,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:35,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 07:10:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:35,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:35,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:35,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:10:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:35,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:10:35,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:35,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:35,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:10:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:10:35,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:35,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:10:35,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:10:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:10:35,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 07:10:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:35,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:35,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:35,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:35,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:35,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:35,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:10:35,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 07:10:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:35,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:35,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:35,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:10:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 07:10:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:35,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:35,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:35,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:10:35,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:10:35,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:10:35,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 07:10:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:10:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:10:35,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:10:35,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:10:35,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:10:35,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:10:35,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:10:35,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:10:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:10:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:10:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:10:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:10:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:10:35,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017904514] [2020-10-14 07:10:35,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:10:35,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 07:10:35,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401289897] [2020-10-14 07:10:35,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:10:35,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:10:35,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:10:35,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:10:35,931 INFO L87 Difference]: Start difference. First operand 343 states and 419 transitions. Second operand 9 states. [2020-10-14 07:10:36,767 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 07:10:37,017 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 07:10:38,245 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-10-14 07:10:38,722 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 07:10:39,019 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 07:10:39,352 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 07:10:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:10:40,378 INFO L93 Difference]: Finished difference Result 974 states and 1311 transitions. [2020-10-14 07:10:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:10:40,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-14 07:10:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:10:40,387 INFO L225 Difference]: With dead ends: 974 [2020-10-14 07:10:40,387 INFO L226 Difference]: Without dead ends: 655 [2020-10-14 07:10:40,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-10-14 07:10:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2020-10-14 07:10:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 559. [2020-10-14 07:10:40,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-14 07:10:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 692 transitions. [2020-10-14 07:10:40,570 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 692 transitions. Word has length 67 [2020-10-14 07:10:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:10:40,571 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 692 transitions. [2020-10-14 07:10:40,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:10:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 692 transitions. [2020-10-14 07:10:40,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 07:10:40,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:10:40,576 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] [2020-10-14 07:10:40,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:10:40,576 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:10:40,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:10:40,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1802868975, now seen corresponding path program 1 times [2020-10-14 07:10:40,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:10:40,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884621319] [2020-10-14 07:10:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:10:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 07:10:40,626 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 07:10:40,627 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 07:10:40,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:10:40,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 07:10:40 BoogieIcfgContainer [2020-10-14 07:10:40,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 07:10:40,667 INFO L168 Benchmark]: Toolchain (without parser) took 30169.67 ms. Allocated memory was 149.9 MB in the beginning and 700.4 MB in the end (delta: 550.5 MB). Free memory was 103.2 MB in the beginning and 631.0 MB in the end (delta: -527.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-14 07:10:40,673 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 149.9 MB. Free memory was 123.2 MB in the beginning and 122.8 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-10-14 07:10:40,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.07 ms. Allocated memory was 149.9 MB in the beginning and 205.0 MB in the end (delta: 55.1 MB). Free memory was 102.8 MB in the beginning and 173.7 MB in the end (delta: -70.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-10-14 07:10:40,676 INFO L168 Benchmark]: Boogie Preprocessor took 104.99 ms. Allocated memory is still 205.0 MB. Free memory was 173.7 MB in the beginning and 169.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-10-14 07:10:40,677 INFO L168 Benchmark]: RCFGBuilder took 1097.17 ms. Allocated memory was 205.0 MB in the beginning and 232.8 MB in the end (delta: 27.8 MB). Free memory was 169.2 MB in the beginning and 188.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. [2020-10-14 07:10:40,677 INFO L168 Benchmark]: TraceAbstraction took 28323.00 ms. Allocated memory was 232.8 MB in the beginning and 700.4 MB in the end (delta: 467.7 MB). Free memory was 188.1 MB in the beginning and 631.0 MB in the end (delta: -442.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-10-14 07:10:40,692 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 149.9 MB. Free memory was 123.2 MB in the beginning and 122.8 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 640.07 ms. Allocated memory was 149.9 MB in the beginning and 205.0 MB in the end (delta: 55.1 MB). Free memory was 102.8 MB in the beginning and 173.7 MB in the end (delta: -70.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.99 ms. Allocated memory is still 205.0 MB. Free memory was 173.7 MB in the beginning and 169.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1097.17 ms. Allocated memory was 205.0 MB in the beginning and 232.8 MB in the end (delta: 27.8 MB). Free memory was 169.2 MB in the beginning and 188.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28323.00 ms. Allocated memory was 232.8 MB in the beginning and 700.4 MB in the end (delta: 467.7 MB). Free memory was 188.1 MB in the beginning and 631.0 MB in the end (delta: -442.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L293] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int cleanupTimeShifts = 4; [L594] int waterLevel = 1; [L595] int methaneLevelCritical = 0; [L753] int pumpRunning = 0; [L754] int systemActive = 1; [L568] int retValue_acc ; [L569] int tmp ; [L573] FCALL select_helpers() [L574] FCALL select_features() [L575] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L575] RET, EXPR valid_product() [L575] tmp = valid_product() [L577] COND TRUE \read(tmp) [L579] FCALL setup() [L580] CALL runTest() [L562] CALL test() [L685] int splverifierCounter ; [L686] int tmp ; [L687] int tmp___0 ; [L688] int tmp___1 ; [L689] int tmp___2 ; [L692] splverifierCounter = 0 [L694] COND TRUE 1 [L696] COND TRUE splverifierCounter < 4 [L702] tmp = __VERIFIER_nondet_int() [L704] COND TRUE \read(tmp) [L706] CALL waterRise() [L612] COND TRUE waterLevel < 2 [L613] waterLevel = waterLevel + 1 [L706] RET waterRise() [L712] tmp___0 = __VERIFIER_nondet_int() [L714] COND FALSE !(\read(tmp___0)) [L722] tmp___2 = __VERIFIER_nondet_int() [L724] COND FALSE !(\read(tmp___2)) [L728] tmp___1 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___1) [L732] CALL stopSystem() [L908] COND FALSE !(\read(pumpRunning)) [L915] systemActive = 0 [L732] RET stopSystem() [L739] CALL timeShift() [L760] COND FALSE !(\read(pumpRunning)) [L767] COND FALSE !(\read(systemActive)) [L775] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L633] int retValue_acc ; [L636] retValue_acc = methaneLevelCritical [L637] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L665] int retValue_acc ; [L668] retValue_acc = waterLevel [L669] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L841] int retValue_acc ; [L844] retValue_acc = pumpRunning [L845] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 223 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 597 SDtfs, 718 SDslu, 477 SDs, 0 SdLazy, 2187 SolverSat, 476 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=559occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 255 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 84914 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...