/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:14:39,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:14:39,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:14:39,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:14:39,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:14:39,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:14:39,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:14:39,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:14:39,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:14:39,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:14:39,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:14:39,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:14:39,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:14:39,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:14:39,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:14:39,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:14:39,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:14:39,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:14:39,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:14:39,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:14:39,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:14:39,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:14:39,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:14:39,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:14:39,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:14:39,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:14:39,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:14:39,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:14:39,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:14:39,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:14:39,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:14:39,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:14:39,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:14:39,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:14:39,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:14:39,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:14:39,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:14:39,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:14:39,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:14:39,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:14:39,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:14:39,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:14:39,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:14:39,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:14:39,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:14:39,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:14:39,702 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:14:39,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:14:39,703 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:14:39,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:14:39,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:14:39,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:14:39,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:14:39,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:14:39,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:14:39,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:14:39,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:14:39,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:14:39,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:14:39,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:14:39,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:14:39,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:14:39,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:14:39,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:14:39,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:14:39,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:14:39,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:14:39,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:14:39,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:14:39,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:14:39,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:14:39,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:14:40,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:14:40,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:14:40,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:14:40,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:14:40,232 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:14:40,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-25 05:14:40,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/137381e76/05452228260c4954a57d4c77c1d969ff/FLAG58c9b2af3 [2020-09-25 05:14:40,926 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:14:40,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-25 05:14:40,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/137381e76/05452228260c4954a57d4c77c1d969ff/FLAG58c9b2af3 [2020-09-25 05:14:41,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/137381e76/05452228260c4954a57d4c77c1d969ff [2020-09-25 05:14:41,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:14:41,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:14:41,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:14:41,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:14:41,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:14:41,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:14:41" (1/1) ... [2020-09-25 05:14:41,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41, skipping insertion in model container [2020-09-25 05:14:41,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:14:41" (1/1) ... [2020-09-25 05:14:41,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:14:41,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:14:41,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:14:41,740 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:14:41,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:14:41,996 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:14:41,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41 WrapperNode [2020-09-25 05:14:41,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:14:41,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:14:41,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:14:41,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:14:42,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41" (1/1) ... [2020-09-25 05:14:42,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41" (1/1) ... [2020-09-25 05:14:42,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41" (1/1) ... [2020-09-25 05:14:42,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41" (1/1) ... [2020-09-25 05:14:42,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41" (1/1) ... [2020-09-25 05:14:42,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41" (1/1) ... [2020-09-25 05:14:42,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41" (1/1) ... [2020-09-25 05:14:42,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:14:42,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:14:42,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:14:42,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:14:42,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:14:42,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:14:42,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:14:42,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 05:14:42,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 05:14:42,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 05:14:42,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 05:14:42,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 05:14:42,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 05:14:42,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 05:14:42,185 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 05:14:42,186 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 05:14:42,186 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 05:14:42,186 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 05:14:42,186 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 05:14:42,186 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 05:14:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 05:14:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 05:14:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 05:14:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 05:14:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 05:14:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 05:14:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 05:14:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 05:14:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 05:14:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 05:14:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 05:14:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 05:14:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 05:14:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 05:14:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 05:14:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 05:14:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 05:14:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:14:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 05:14:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 05:14:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 05:14:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 05:14:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 05:14:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:14:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:14:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 05:14:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 05:14:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:14:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:14:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 05:14:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:14:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:14:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:14:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:14:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 05:14:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:14:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 05:14:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 05:14:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:14:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 05:14:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 05:14:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:14:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 05:14:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 05:14:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 05:14:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 05:14:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 05:14:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 05:14:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 05:14:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 05:14:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 05:14:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 05:14:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 05:14:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 05:14:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 05:14:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 05:14:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 05:14:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 05:14:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 05:14:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 05:14:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 05:14:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 05:14:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 05:14:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 05:14:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 05:14:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 05:14:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 05:14:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 05:14:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 05:14:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 05:14:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:14:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 05:14:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:14:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 05:14:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:14:43,428 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:14:43,428 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 05:14:43,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:14:43 BoogieIcfgContainer [2020-09-25 05:14:43,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:14:43,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:14:43,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:14:43,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:14:43,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:14:41" (1/3) ... [2020-09-25 05:14:43,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dea1b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:14:43, skipping insertion in model container [2020-09-25 05:14:43,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:14:41" (2/3) ... [2020-09-25 05:14:43,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dea1b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:14:43, skipping insertion in model container [2020-09-25 05:14:43,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:14:43" (3/3) ... [2020-09-25 05:14:43,445 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-09-25 05:14:43,457 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:14:43,468 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:14:43,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:14:43,519 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:14:43,520 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:14:43,520 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:14:43,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:14:43,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:14:43,520 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:14:43,521 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:14:43,521 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:14:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-09-25 05:14:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 05:14:43,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:14:43,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:14:43,570 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:14:43,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:14:43,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1461403982, now seen corresponding path program 1 times [2020-09-25 05:14:43,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:14:43,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090194986] [2020-09-25 05:14:43,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:14:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:44,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:44,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:48,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:48,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 05:14:48,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:14:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4384 [2020-09-25 05:14:48,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:48,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:48,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 05:14:48,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 05:14:49,088 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 05:14:49,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:14:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:49,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:14:49,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 05:14:49,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:49,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:14:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:14:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 05:14:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:49,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:49,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:49,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:14:49,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:49,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:14:49,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:49,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:14:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:14:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 05:14:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:49,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:49,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:49,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:14:49,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:14:49,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:49,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:14:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 05:14:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:49,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:49,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:14:49,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:49,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:14:49,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:49,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:14:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 05:14:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:49,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:49,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:14:49,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:14:49,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:49,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:14:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:49,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 05:14:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:49,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:49,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:49,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:14:49,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:49,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:14:49,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:49,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:14:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:49,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:49,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 05:14:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:49,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:49,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:14:49,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:49,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:14:49,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:49,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:49,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:14:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:49,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:49,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 05:14:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:49,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:49,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:49,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:14:49,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:14:49,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:49,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:14:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:14:49,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090194986] [2020-09-25 05:14:49,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:14:49,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:14:49,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810174426] [2020-09-25 05:14:49,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:14:49,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:14:49,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:14:49,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:14:49,574 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-09-25 05:14:50,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:14:50,966 INFO L93 Difference]: Finished difference Result 477 states and 570 transitions. [2020-09-25 05:14:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:14:50,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 05:14:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:14:50,991 INFO L225 Difference]: With dead ends: 477 [2020-09-25 05:14:50,991 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 05:14:51,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:14:51,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 05:14:51,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 255. [2020-09-25 05:14:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-25 05:14:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 278 transitions. [2020-09-25 05:14:51,226 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 278 transitions. Word has length 153 [2020-09-25 05:14:51,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:14:51,229 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 278 transitions. [2020-09-25 05:14:51,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:14:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 278 transitions. [2020-09-25 05:14:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 05:14:51,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:14:51,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:14:51,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:14:51,247 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:14:51,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:14:51,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1820086342, now seen corresponding path program 1 times [2020-09-25 05:14:51,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:14:51,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168371760] [2020-09-25 05:14:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:14:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:51,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:51,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:56,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:56,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 05:14:56,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:14:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:14:56,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:56,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:14:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 05:14:56,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:14:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:56,618 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 05:14:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:14:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:56,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:56,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:14:56,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 05:14:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:56,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:14:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:14:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:14:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:56,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 05:14:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:56,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:56,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:14:56,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:14:56,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:56,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:14:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:14:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:14:56,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:56,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 05:14:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:56,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:56,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:56,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:14:56,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:14:56,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:56,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:14:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:14:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:14:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 05:14:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:57,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:57,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:14:57,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:57,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:14:57,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:57,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:14:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:14:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:14:57,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 05:14:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:57,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:57,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:57,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:14:57,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:14:57,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:57,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:14:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:14:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:14:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 05:14:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:57,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:57,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:14:57,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:57,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:14:57,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:57,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:14:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 05:14:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:57,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:57,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:57,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:14:57,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:57,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:14:57,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:57,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:57,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:57,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:14:57,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:57,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:57,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 05:14:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:14:57,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:14:57,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:14:57,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:14:57,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:14:57,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:14:57,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:14:57,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:14:57,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:14:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:14:57,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:14:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:14:57,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168371760] [2020-09-25 05:14:57,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:14:57,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:14:57,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215569548] [2020-09-25 05:14:57,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:14:57,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:14:57,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:14:57,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:14:57,087 INFO L87 Difference]: Start difference. First operand 255 states and 278 transitions. Second operand 4 states. [2020-09-25 05:14:57,555 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 05:14:58,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:14:58,585 INFO L93 Difference]: Finished difference Result 441 states and 511 transitions. [2020-09-25 05:14:58,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:14:58,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 05:14:58,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:14:58,596 INFO L225 Difference]: With dead ends: 441 [2020-09-25 05:14:58,597 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 05:14:58,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:14:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 05:14:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 255. [2020-09-25 05:14:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-25 05:14:58,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 277 transitions. [2020-09-25 05:14:58,692 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 277 transitions. Word has length 154 [2020-09-25 05:14:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:14:58,694 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 277 transitions. [2020-09-25 05:14:58,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:14:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 277 transitions. [2020-09-25 05:14:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 05:14:58,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:14:58,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:14:58,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:14:58,698 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:14:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:14:58,698 INFO L82 PathProgramCache]: Analyzing trace with hash 515182839, now seen corresponding path program 1 times [2020-09-25 05:14:58,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:14:58,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116382090] [2020-09-25 05:14:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:14:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:14:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:00,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:00,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 05:15:00,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:00,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1975 [2020-09-25 05:15:00,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:00,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:00,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:15:00,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 05:15:00,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 05:15:00,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:15:01,168 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 05:15:01,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:15:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:15:01,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 05:15:01,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:15:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:15:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:15:01,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 05:15:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:15:01,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:15:01,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:15:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:15:01,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:15:01,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 05:15:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:15:01,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:15:01,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:15:01,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:15:01,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:15:01,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 05:15:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:15:01,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:15:01,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:15:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:15:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:15:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 05:15:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:15:01,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:15:01,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:15:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:15:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:15:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 05:15:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:15:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:15:01,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:15:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:15:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:15:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 05:15:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:15:01,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:15:01,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:15:01,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:15:01,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:15:01,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 05:15:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:15:01,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:15:01,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:15:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:15:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:15:01,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 05:15:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:15:01,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:15:01,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:15:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:15:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:15:01,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 05:15:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:15:01,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:15:01,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:15:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:15:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:15:01,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-25 05:15:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:15:01,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:15:01,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:15:01,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:15:01,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:15:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:15:01,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:15:01,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:15:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:15:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:15:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:15:01,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:15:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:15:01,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116382090] [2020-09-25 05:15:01,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:15:01,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 05:15:01,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661392591] [2020-09-25 05:15:01,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:15:01,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:15:01,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:15:01,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:15:01,755 INFO L87 Difference]: Start difference. First operand 255 states and 277 transitions. Second operand 9 states. [2020-09-25 05:15:02,291 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 05:15:04,702 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 05:15:05,128 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 05:15:05,488 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 05:15:05,842 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 05:15:06,167 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 05:15:06,656 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 05:15:06,991 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 05:15:07,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:15:07,853 INFO L93 Difference]: Finished difference Result 649 states and 811 transitions. [2020-09-25 05:15:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:15:07,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-09-25 05:15:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:15:07,860 INFO L225 Difference]: With dead ends: 649 [2020-09-25 05:15:07,860 INFO L226 Difference]: Without dead ends: 480 [2020-09-25 05:15:07,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:15:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-09-25 05:15:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 387. [2020-09-25 05:15:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-09-25 05:15:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 433 transitions. [2020-09-25 05:15:07,945 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 433 transitions. Word has length 176 [2020-09-25 05:15:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:15:07,946 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 433 transitions. [2020-09-25 05:15:07,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:15:07,946 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 433 transitions. [2020-09-25 05:15:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:15:07,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:15:07,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:15:07,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:15:07,950 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:15:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:15:07,951 INFO L82 PathProgramCache]: Analyzing trace with hash -342521873, now seen corresponding path program 1 times [2020-09-25 05:15:07,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:15:07,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869760178] [2020-09-25 05:15:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:15:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:15:08,021 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:15:08,021 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:15:08,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:15:08,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:15:08 BoogieIcfgContainer [2020-09-25 05:15:08,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:15:08,056 INFO L168 Benchmark]: Toolchain (without parser) took 26821.34 ms. Allocated memory was 141.0 MB in the beginning and 546.8 MB in the end (delta: 405.8 MB). Free memory was 101.8 MB in the beginning and 278.8 MB in the end (delta: -176.9 MB). Peak memory consumption was 228.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:15:08,057 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 05:15:08,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.33 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 174.1 MB in the end (delta: -72.9 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:15:08,059 INFO L168 Benchmark]: Boogie Preprocessor took 100.95 ms. Allocated memory is still 204.5 MB. Free memory was 174.1 MB in the beginning and 170.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:15:08,060 INFO L168 Benchmark]: RCFGBuilder took 1337.15 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 170.2 MB in the beginning and 175.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-09-25 05:15:08,061 INFO L168 Benchmark]: TraceAbstraction took 24617.01 ms. Allocated memory was 235.9 MB in the beginning and 546.8 MB in the end (delta: 310.9 MB). Free memory was 175.9 MB in the beginning and 278.8 MB in the end (delta: -102.9 MB). Peak memory consumption was 208.1 MB. Max. memory is 7.1 GB. [2020-09-25 05:15:08,065 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 757.33 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 174.1 MB in the end (delta: -72.9 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.95 ms. Allocated memory is still 204.5 MB. Free memory was 174.1 MB in the beginning and 170.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1337.15 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 170.2 MB in the beginning and 175.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24617.01 ms. Allocated memory was 235.9 MB in the beginning and 546.8 MB in the end (delta: 310.9 MB). Free memory was 175.9 MB in the beginning and 278.8 MB in the end (delta: -102.9 MB). Peak memory consumption was 208.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 598]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int pumpRunning = 0; [L416] int systemActive = 1; [L672] int waterLevel = 1; [L673] int methaneLevelCritical = 0; [L761] int cleanupTimeShifts = 4; [L837] int retValue_acc ; [L838] int tmp ; [L842] FCALL select_helpers() [L843] FCALL select_features() [L844] CALL, EXPR valid_product() [L920] int retValue_acc ; [L923] retValue_acc = 1 [L924] return (retValue_acc); [L844] RET, EXPR valid_product() [L844] tmp = valid_product() [L846] COND TRUE \read(tmp) [L848] FCALL setup() [L849] CALL runTest() [L828] CALL test() [L607] int splverifierCounter ; [L608] int tmp ; [L609] int tmp___0 ; [L610] int tmp___1 ; [L611] int tmp___2 ; [L614] splverifierCounter = 0 [L616] COND TRUE 1 [L618] COND TRUE splverifierCounter < 4 [L624] tmp = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp) [L628] CALL waterRise() [L690] COND TRUE waterLevel < 2 [L691] waterLevel = waterLevel + 1 [L628] RET waterRise() [L634] tmp___0 = __VERIFIER_nondet_int() [L636] COND FALSE !(\read(tmp___0)) [L644] tmp___2 = __VERIFIER_nondet_int() [L646] COND TRUE \read(tmp___2) [L659] CALL timeShift() [L423] COND FALSE !(\read(pumpRunning)) [L430] COND TRUE \read(systemActive) [L432] CALL processEnvironment() [L478] int tmp ; [L481] COND FALSE !(\read(pumpRunning)) [L496] CALL processEnvironment__wrappee__lowWaterSensor() [L452] int tmp ; [L455] COND FALSE !(\read(pumpRunning)) [L470] FCALL processEnvironment__wrappee__base() [L496] RET processEnvironment__wrappee__lowWaterSensor() [L432] RET processEnvironment() [L438] CALL __utac_acc__Specification3_spec__1() [L861] int tmp ; [L862] int tmp___0 ; [L863] int tmp___1 ; [L867] CALL, EXPR isMethaneLevelCritical() [L711] int retValue_acc ; [L714] retValue_acc = methaneLevelCritical [L715] return (retValue_acc); [L867] RET, EXPR isMethaneLevelCritical() [L867] tmp = isMethaneLevelCritical() [L869] COND FALSE !(\read(tmp)) [L873] CALL, EXPR getWaterLevel() [L743] int retValue_acc ; [L746] retValue_acc = waterLevel [L747] return (retValue_acc); [L873] RET, EXPR getWaterLevel() [L873] tmp___0 = getWaterLevel() [L875] COND TRUE tmp___0 == 2 [L877] CALL, EXPR isPumpRunning() [L530] int retValue_acc ; [L533] retValue_acc = pumpRunning [L534] return (retValue_acc); [L877] RET, EXPR isPumpRunning() [L877] tmp___1 = isPumpRunning() [L879] COND FALSE !(\read(tmp___1)) [L883] CALL __automaton_fail() [L598] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 621 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 740 SDtfs, 937 SDslu, 667 SDs, 0 SdLazy, 1746 SolverSat, 324 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 175 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 480 ConstructedInterpolants, 0 QuantifiedInterpolants, 195770 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...