/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=WIDEST --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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:58:20,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:58:20,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:58:20,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:58:20,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:58:20,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:58:20,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:58:20,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:58:20,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:58:20,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:58:20,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:58:20,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:58:20,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:58:20,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:58:20,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:58:20,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:58:20,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:58:20,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:58:20,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:58:20,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:58:20,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:58:20,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:58:20,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:58:20,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:58:20,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:58:20,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:58:20,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:58:20,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:58:20,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:58:20,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:58:20,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:58:20,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:58:20,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:58:20,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:58:20,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:58:20,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:58:20,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:58:20,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:58:20,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:58:20,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:58:20,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:58:20,640 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 02:58:20,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:58:20,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:58:20,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:58:20,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:58:20,671 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:58:20,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:58:20,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:58:20,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:58:20,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:58:20,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:58:20,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:58:20,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:58:20,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:58:20,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:58:20,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:58:20,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:58:20,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:58:20,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:58:20,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:58:20,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:58:20,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:58:20,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:58:20,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:58:20,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:58:20,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:58:20,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:58:20,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:58:20,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:58:20,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:58:20,677 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 02:58:21,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:58:21,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:58:21,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:58:21,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:58:21,178 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:58:21,179 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2020-09-25 02:58:21,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f7e9aaaf/bee50a02d66642c3870483f0b7140161/FLAG5531856bf [2020-09-25 02:58:21,903 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:58:21,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2020-09-25 02:58:21,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f7e9aaaf/bee50a02d66642c3870483f0b7140161/FLAG5531856bf [2020-09-25 02:58:22,192 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f7e9aaaf/bee50a02d66642c3870483f0b7140161 [2020-09-25 02:58:22,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:58:22,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:58:22,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:58:22,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:58:22,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:58:22,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:58:22" (1/1) ... [2020-09-25 02:58:22,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f68fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22, skipping insertion in model container [2020-09-25 02:58:22,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:58:22" (1/1) ... [2020-09-25 02:58:22,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:58:22,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:58:22,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:58:22,816 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:58:22,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:58:22,937 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:58:22,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22 WrapperNode [2020-09-25 02:58:22,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:58:22,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:58:22,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:58:22,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:58:22,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22" (1/1) ... [2020-09-25 02:58:22,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22" (1/1) ... [2020-09-25 02:58:22,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22" (1/1) ... [2020-09-25 02:58:22,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22" (1/1) ... [2020-09-25 02:58:23,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22" (1/1) ... [2020-09-25 02:58:23,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22" (1/1) ... [2020-09-25 02:58:23,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22" (1/1) ... [2020-09-25 02:58:23,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:58:23,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:58:23,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:58:23,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:58:23,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22" (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 02:58:23,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:58:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:58:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 02:58:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 02:58:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 02:58:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 02:58:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 02:58:23,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:58:23,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 02:58:23,164 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 02:58:23,164 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 02:58:23,164 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 02:58:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-09-25 02:58:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 02:58:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 02:58:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 02:58:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 02:58:23,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 02:58:23,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 02:58:23,167 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 02:58:23,167 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 02:58:23,167 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 02:58:23,167 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 02:58:23,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 02:58:23,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 02:58:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 02:58:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 02:58:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 02:58:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 02:58:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 02:58:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 02:58:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 02:58:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 02:58:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 02:58:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 02:58:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:58:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:58:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 02:58:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 02:58:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 02:58:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 02:58:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 02:58:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 02:58:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 02:58:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 02:58:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 02:58:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 02:58:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 02:58:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 02:58:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 02:58:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:58:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 02:58:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 02:58:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 02:58:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 02:58:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 02:58:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 02:58:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 02:58:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 02:58:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 02:58:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-09-25 02:58:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 02:58:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:58:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 02:58:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 02:58:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 02:58:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:58:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:58:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 02:58:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:58:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:58:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:58:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:58:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 02:58:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:58:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 02:58:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 02:58:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:58:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 02:58:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 02:58:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 02:58:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:58:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 02:58:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:58:24,354 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:58:24,354 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 02:58:24,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:58:24 BoogieIcfgContainer [2020-09-25 02:58:24,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:58:24,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:58:24,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:58:24,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:58:24,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:58:22" (1/3) ... [2020-09-25 02:58:24,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527bd7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:58:24, skipping insertion in model container [2020-09-25 02:58:24,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:58:22" (2/3) ... [2020-09-25 02:58:24,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527bd7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:58:24, skipping insertion in model container [2020-09-25 02:58:24,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:58:24" (3/3) ... [2020-09-25 02:58:24,372 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product09.cil.c [2020-09-25 02:58:24,384 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:58:24,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:58:24,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:58:24,449 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:58:24,449 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:58:24,449 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:58:24,449 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:58:24,450 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:58:24,450 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:58:24,450 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:58:24,450 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:58:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states. [2020-09-25 02:58:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 02:58:24,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:58:24,498 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 02:58:24,499 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:58:24,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:58:24,508 INFO L82 PathProgramCache]: Analyzing trace with hash -2059425041, now seen corresponding path program 1 times [2020-09-25 02:58:24,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:58:24,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381873297] [2020-09-25 02:58:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:58:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:25,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:29,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:29,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 02:58:29,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:58:29,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4649 [2020-09-25 02:58:29,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:58:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 02:58:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 02:58:29,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:58:30,105 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:58:30,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:58:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:30,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:30,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:30,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:58:30,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:30,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 02:58:30,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:30,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:30,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:30,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 02:58:30,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 02:58:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:58:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:30,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:30,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:30,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:58:30,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:30,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:58:30,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:58:30,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:30,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:58:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:30,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:30,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:58:30,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:30,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:58:30,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:58:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:30,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:58:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:30,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:30,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:30,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:30,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:30,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:58:30,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:58:30,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:30,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:58:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:30,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:30,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:58:30,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:58:30,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:30,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:30,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:30,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:58:30,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:30,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 02:58:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:30,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:30,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:30,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:30,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:30,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:58:30,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:30,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:30,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:30,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:58:30,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:30,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 02:58:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:30,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:30,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:30,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:30,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:58:30,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:58:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:58:30,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:30,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 02:58:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:30,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:30,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:30,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:30,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:58:30,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:58:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:58:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:58:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:30,806 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 02:58:30,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381873297] [2020-09-25 02:58:30,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:58:30,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:58:30,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514634889] [2020-09-25 02:58:30,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:58:30,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:58:30,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:58:30,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:58:30,839 INFO L87 Difference]: Start difference. First operand 268 states. Second operand 8 states. [2020-09-25 02:58:31,471 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:58:32,712 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 02:58:33,354 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-25 02:58:34,059 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-25 02:58:34,419 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:58:34,734 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:58:35,087 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:58:35,422 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:58:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:58:36,267 INFO L93 Difference]: Finished difference Result 457 states and 559 transitions. [2020-09-25 02:58:36,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:58:36,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-25 02:58:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:58:36,289 INFO L225 Difference]: With dead ends: 457 [2020-09-25 02:58:36,290 INFO L226 Difference]: Without dead ends: 318 [2020-09-25 02:58:36,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:58:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-09-25 02:58:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 286. [2020-09-25 02:58:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-25 02:58:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2020-09-25 02:58:36,408 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 153 [2020-09-25 02:58:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:58:36,409 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2020-09-25 02:58:36,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:58:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2020-09-25 02:58:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 02:58:36,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:58:36,417 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] [2020-09-25 02:58:36,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:58:36,417 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:58:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:58:36,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1777095180, now seen corresponding path program 1 times [2020-09-25 02:58:36,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:58:36,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081097568] [2020-09-25 02:58:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:58:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:36,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:38,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:41,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:41,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 02:58:41,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:58:41,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 02:58:41,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:58:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 02:58:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:58:41,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:41,892 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:58:41,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:58:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:42,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:42,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:58:42,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-25 02:58:42,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 02:58:42,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:58:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:42,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:42,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:42,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:58:42,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:42,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:58:42,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:58:42,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:42,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:58:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:42,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:42,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:58:42,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:58:42,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:58:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:58:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:42,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:42,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:42,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:42,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:42,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:58:42,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:58:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:58:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:42,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:42,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:58:42,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:58:42,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:58:42,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 02:58:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:42,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:42,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:58:42,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:58:42,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:58:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:58:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:58:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:42,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 02:58:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:42,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:42,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:42,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:42,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:58:42,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:42,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:42,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:58:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-25 02:58:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:42,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:42,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:42,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:42,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:42,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:58:42,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:58:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:58:42,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:58:42,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 02:58:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:42,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:42,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:42,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:58:42,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:58:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:58:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:58:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:42,451 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 02:58:42,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081097568] [2020-09-25 02:58:42,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:58:42,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 02:58:42,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793311223] [2020-09-25 02:58:42,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:58:42,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:58:42,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:58:42,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:58:42,458 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand 12 states. [2020-09-25 02:58:42,977 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:58:44,038 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:58:44,857 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:58:45,267 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:58:45,736 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:58:46,073 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:58:46,443 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:58:46,756 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:58:47,074 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:58:47,426 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:58:47,809 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:58:48,462 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-09-25 02:58:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:58:49,522 INFO L93 Difference]: Finished difference Result 507 states and 617 transitions. [2020-09-25 02:58:49,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 02:58:49,522 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2020-09-25 02:58:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:58:49,529 INFO L225 Difference]: With dead ends: 507 [2020-09-25 02:58:49,529 INFO L226 Difference]: Without dead ends: 382 [2020-09-25 02:58:49,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-09-25 02:58:49,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-09-25 02:58:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 336. [2020-09-25 02:58:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-09-25 02:58:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 371 transitions. [2020-09-25 02:58:49,590 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 371 transitions. Word has length 159 [2020-09-25 02:58:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:58:49,591 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 371 transitions. [2020-09-25 02:58:49,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:58:49,591 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 371 transitions. [2020-09-25 02:58:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 02:58:49,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:58:49,595 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] [2020-09-25 02:58:49,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:58:49,596 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:58:49,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:58:49,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1429262058, now seen corresponding path program 1 times [2020-09-25 02:58:49,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:58:49,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373748371] [2020-09-25 02:58:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:58:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:50,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:50,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 02:58:50,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:50,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-09-25 02:58:50,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:50,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 02:58:50,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 02:58:50,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:58:50,359 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:58:50,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:58:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:50,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:50,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:58:50,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 02:58:50,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:58:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:58:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:50,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:50,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:50,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:58:50,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:58:50,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:50,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:50,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:58:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:58:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:58:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:50,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:50,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:58:50,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:50,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:58:50,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:50,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:50,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:50,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:58:50,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:58:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:50,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:50,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:50,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:50,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:58:50,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:58:50,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:50,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:58:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:50,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:50,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:58:50,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:58:50,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:58:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:50,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 02:58:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:50,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:50,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:58:50,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:58:50,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:58:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:58:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:58:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:50,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 02:58:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:50,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:50,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:50,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:58:50,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:58:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:58:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:58:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:58:50,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-25 02:58:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:50,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:50,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:50,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:50,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:58:50,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:58:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:58:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:58:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:58:50,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-25 02:58:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:58:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:58:50,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:58:50,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:58:50,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:58:50,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:58:50,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:58:50,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:58:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:58:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:58:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:58:50,775 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 02:58:50,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373748371] [2020-09-25 02:58:50,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:58:50,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:58:50,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186959084] [2020-09-25 02:58:50,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:58:50,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:58:50,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:58:50,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:58:50,779 INFO L87 Difference]: Start difference. First operand 336 states and 371 transitions. Second operand 5 states. [2020-09-25 02:58:51,194 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:58:51,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:58:51,968 INFO L93 Difference]: Finished difference Result 597 states and 693 transitions. [2020-09-25 02:58:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:58:51,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 02:58:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:58:51,973 INFO L225 Difference]: With dead ends: 597 [2020-09-25 02:58:51,974 INFO L226 Difference]: Without dead ends: 371 [2020-09-25 02:58:51,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:58:51,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-09-25 02:58:52,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 336. [2020-09-25 02:58:52,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-09-25 02:58:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 367 transitions. [2020-09-25 02:58:52,048 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 367 transitions. Word has length 168 [2020-09-25 02:58:52,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:58:52,049 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 367 transitions. [2020-09-25 02:58:52,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:58:52,049 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 367 transitions. [2020-09-25 02:58:52,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 02:58:52,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:58:52,053 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] [2020-09-25 02:58:52,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:58:52,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:58:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:58:52,054 INFO L82 PathProgramCache]: Analyzing trace with hash -645930008, now seen corresponding path program 1 times [2020-09-25 02:58:52,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:58:52,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029568333] [2020-09-25 02:58:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:58:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:58:52,119 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:58:52,120 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:58:52,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:58:52,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:58:52 BoogieIcfgContainer [2020-09-25 02:58:52,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:58:52,156 INFO L168 Benchmark]: Toolchain (without parser) took 29948.00 ms. Allocated memory was 141.6 MB in the beginning and 559.9 MB in the end (delta: 418.4 MB). Free memory was 100.3 MB in the beginning and 482.9 MB in the end (delta: -382.6 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:58:52,157 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 141.6 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:58:52,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.63 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 99.6 MB in the beginning and 171.6 MB in the end (delta: -71.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:58:52,159 INFO L168 Benchmark]: Boogie Preprocessor took 97.98 ms. Allocated memory is still 203.4 MB. Free memory was 171.6 MB in the beginning and 167.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:58:52,160 INFO L168 Benchmark]: RCFGBuilder took 1325.45 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 167.5 MB in the beginning and 181.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2020-09-25 02:58:52,161 INFO L168 Benchmark]: TraceAbstraction took 27790.80 ms. Allocated memory was 235.4 MB in the beginning and 559.9 MB in the end (delta: 324.5 MB). Free memory was 181.8 MB in the beginning and 482.9 MB in the end (delta: -301.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:58:52,165 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 141.6 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 721.63 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 99.6 MB in the beginning and 171.6 MB in the end (delta: -71.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.98 ms. Allocated memory is still 203.4 MB. Free memory was 171.6 MB in the beginning and 167.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1325.45 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 167.5 MB in the beginning and 181.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27790.80 ms. Allocated memory was 235.4 MB in the beginning and 559.9 MB in the end (delta: 324.5 MB). Free memory was 181.8 MB in the beginning and 482.9 MB in the end (delta: -301.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 148]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L224] int pumpRunning = 0; [L225] int systemActive = 1; [L589] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L786] int waterLevel = 1; [L787] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L411] int retValue_acc ; [L414] retValue_acc = 1 [L415] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L154] int splverifierCounter ; [L155] int tmp ; [L156] int tmp___0 ; [L157] int tmp___1 ; [L158] int tmp___2 ; [L161] splverifierCounter = 0 [L163] COND TRUE 1 [L165] COND TRUE splverifierCounter < 4 [L171] tmp = __VERIFIER_nondet_int() [L173] COND TRUE \read(tmp) [L175] CALL waterRise() [L804] COND TRUE waterLevel < 2 [L805] waterLevel = waterLevel + 1 [L175] RET waterRise() [L181] tmp___0 = __VERIFIER_nondet_int() [L183] COND FALSE !(\read(tmp___0)) [L191] tmp___2 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___2) [L206] CALL timeShift() [L232] COND FALSE !(\read(pumpRunning)) [L239] COND TRUE \read(systemActive) [L241] FCALL processEnvironment() [L247] CALL __utac_acc__Specification3_spec__1() [L352] int tmp ; [L353] int tmp___0 ; [L354] int tmp___1 ; [L358] CALL, EXPR isMethaneLevelCritical() [L825] int retValue_acc ; [L828] retValue_acc = methaneLevelCritical [L829] return (retValue_acc); [L358] RET, EXPR isMethaneLevelCritical() [L358] tmp = isMethaneLevelCritical() [L360] COND FALSE !(\read(tmp)) [L364] CALL, EXPR getWaterLevel() [L857] int retValue_acc ; [L860] retValue_acc = waterLevel [L861] return (retValue_acc); [L364] RET, EXPR getWaterLevel() [L364] tmp___0 = getWaterLevel() [L366] COND TRUE tmp___0 == 2 [L368] CALL, EXPR isPumpRunning() [L305] int retValue_acc ; [L308] retValue_acc = pumpRunning [L309] return (retValue_acc); [L368] RET, EXPR isPumpRunning() [L368] tmp___1 = isPumpRunning() [L370] COND FALSE !(\read(tmp___1)) [L374] CALL __automaton_fail() [L148] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 587 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 663 SDtfs, 991 SDslu, 1627 SDs, 0 SdLazy, 2712 SolverSat, 277 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 113 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 651 NumberOfCodeBlocks, 651 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 477 ConstructedInterpolants, 0 QuantifiedInterpolants, 212518 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...