/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=BIGGEST --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_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:13:06,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:13:06,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:13:06,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:13:06,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:13:06,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:13:06,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:13:06,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:13:06,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:13:06,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:13:06,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:13:06,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:13:06,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:13:06,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:13:06,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:13:06,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:13:06,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:13:06,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:13:06,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:13:06,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:13:06,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:13:06,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:13:06,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:13:06,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:13:06,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:13:06,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:13:06,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:13:06,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:13:06,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:13:06,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:13:06,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:13:06,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:13:06,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:13:06,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:13:06,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:13:06,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:13:06,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:13:06,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:13:06,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:13:06,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:13:06,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:13:06,680 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 [2020-09-24 20:13:06,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:13:06,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:13:06,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:13:06,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:13:06,729 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:13:06,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:13:06,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:13:06,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:13:06,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:13:06,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:13:06,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:13:06,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:13:06,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:13:06,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:13:06,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:13:06,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:13:06,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:13:06,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:13:06,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:13:06,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:13:06,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:13:06,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:13:06,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:13:06,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:13:06,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:13:06,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:13:06,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:13:06,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:13:06,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:13:06,736 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:13:07,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:13:07,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:13:07,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:13:07,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:13:07,203 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:13:07,204 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-09-24 20:13:07,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffd5b0831/77ef4e706c49432f9c9b4529cf1b35df/FLAG2dab265a3 [2020-09-24 20:13:07,924 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:13:07,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-09-24 20:13:07,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffd5b0831/77ef4e706c49432f9c9b4529cf1b35df/FLAG2dab265a3 [2020-09-24 20:13:08,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffd5b0831/77ef4e706c49432f9c9b4529cf1b35df [2020-09-24 20:13:08,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:13:08,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:13:08,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:13:08,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:13:08,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:13:08,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:13:08" (1/1) ... [2020-09-24 20:13:08,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2beb3c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08, skipping insertion in model container [2020-09-24 20:13:08,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:13:08" (1/1) ... [2020-09-24 20:13:08,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:13:08,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:13:08,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:13:08,821 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:13:08,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:13:08,961 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:13:08,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08 WrapperNode [2020-09-24 20:13:08,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:13:08,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:13:08,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:13:08,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:13:08,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08" (1/1) ... [2020-09-24 20:13:08,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08" (1/1) ... [2020-09-24 20:13:08,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08" (1/1) ... [2020-09-24 20:13:08,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08" (1/1) ... [2020-09-24 20:13:09,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08" (1/1) ... [2020-09-24 20:13:09,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08" (1/1) ... [2020-09-24 20:13:09,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08" (1/1) ... [2020-09-24 20:13:09,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:13:09,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:13:09,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:13:09,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:13:09,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08" (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 [2020-09-24 20:13:09,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:13:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:13:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 20:13:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 20:13:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 20:13:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 20:13:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 20:13:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 20:13:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 20:13:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 20:13:09,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 20:13:09,149 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 20:13:09,149 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 20:13:09,149 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 20:13:09,149 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 20:13:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 20:13:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 20:13:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 20:13:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 20:13:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 20:13:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 20:13:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 20:13:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 20:13:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 20:13:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 20:13:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 20:13:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 20:13:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:13:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 20:13:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 20:13:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 20:13:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 20:13:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 20:13:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 20:13:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 20:13:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 20:13:09,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 20:13:09,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 20:13:09,154 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 20:13:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:13:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:13:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 20:13:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 20:13:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 20:13:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 20:13:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 20:13:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 20:13:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 20:13:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 20:13:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:13:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 20:13:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 20:13:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 20:13:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 20:13:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 20:13:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 20:13:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 20:13:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 20:13:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 20:13:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 20:13:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 20:13:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 20:13:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 20:13:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 20:13:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 20:13:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 20:13:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 20:13:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 20:13:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 20:13:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 20:13:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 20:13:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:13:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 20:13:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:13:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:13:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 20:13:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:13:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:13:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:13:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:13:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 20:13:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:13:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 20:13:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 20:13:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:13:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 20:13:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 20:13:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 20:13:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 20:13:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:13:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:13:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:13:10,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:13:10,356 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 20:13:10,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:13:10 BoogieIcfgContainer [2020-09-24 20:13:10,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:13:10,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:13:10,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:13:10,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:13:10,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:13:08" (1/3) ... [2020-09-24 20:13:10,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dad0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:13:10, skipping insertion in model container [2020-09-24 20:13:10,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:08" (2/3) ... [2020-09-24 20:13:10,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dad0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:13:10, skipping insertion in model container [2020-09-24 20:13:10,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:13:10" (3/3) ... [2020-09-24 20:13:10,378 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product23.cil.c [2020-09-24 20:13:10,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:13:10,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:13:10,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:13:10,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:13:10,453 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:13:10,454 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:13:10,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:13:10,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:13:10,454 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:13:10,454 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:13:10,454 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:13:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2020-09-24 20:13:10,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 20:13:10,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:10,508 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] [2020-09-24 20:13:10,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:10,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:10,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2023786864, now seen corresponding path program 1 times [2020-09-24 20:13:10,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:10,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128151282] [2020-09-24 20:13:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:11,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:11,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:15,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:15,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 20:13:15,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:13:15,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 20:13:15,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:15,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:13:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 20:13:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 20:13:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:13:16,396 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:13:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:13:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:16,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:16,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:16,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:13:16,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-24 20:13:16,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 20:13:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:13:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:16,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:16,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:16,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:16,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:13:16,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:16,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:16,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:13:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:16,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:16,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:16,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:16,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:16,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:13:16,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:16,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:16,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:16,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:16,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:16,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:13:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:16,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:16,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:16,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:16,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:13:16,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:16,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:13:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:17,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:17,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:17,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:17,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:13:17,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:17,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:17,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 20:13:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:17,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:17,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:17,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:17,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:17,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:13:17,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:17,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:17,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:17,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:17,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 20:13:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:17,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:17,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:17,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:17,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:17,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:13:17,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:13:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:17,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 20:13:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:17,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:17,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:17,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:17,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:17,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:13:17,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:17,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:17,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:17,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:13:17,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128151282] [2020-09-24 20:13:17,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:13:17,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:13:17,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788655989] [2020-09-24 20:13:17,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:13:17,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:13:17,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:13:17,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:13:17,156 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 8 states. [2020-09-24 20:13:17,741 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:19,681 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:20,077 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:13:20,478 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:20,944 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:21,266 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:13:21,585 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:21,913 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:13:23,263 INFO L93 Difference]: Finished difference Result 655 states and 810 transitions. [2020-09-24 20:13:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:13:23,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-24 20:13:23,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:13:23,290 INFO L225 Difference]: With dead ends: 655 [2020-09-24 20:13:23,290 INFO L226 Difference]: Without dead ends: 454 [2020-09-24 20:13:23,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:13:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-09-24 20:13:23,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 406. [2020-09-24 20:13:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-09-24 20:13:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 465 transitions. [2020-09-24 20:13:23,456 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 465 transitions. Word has length 153 [2020-09-24 20:13:23,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:13:23,457 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 465 transitions. [2020-09-24 20:13:23,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:13:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 465 transitions. [2020-09-24 20:13:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 20:13:23,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:23,466 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] [2020-09-24 20:13:23,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:13:23,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:23,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:23,468 INFO L82 PathProgramCache]: Analyzing trace with hash 506790598, now seen corresponding path program 1 times [2020-09-24 20:13:23,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:23,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749580919] [2020-09-24 20:13:23,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:24,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:24,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 20:13:24,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:24,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1198 [2020-09-24 20:13:24,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:24,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:13:24,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 20:13:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:13:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:25,049 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:13:25,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:13:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:25,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:25,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:13:25,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:25,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-24 20:13:25,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:25,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:13:25,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:25,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:13:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:25,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:25,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:25,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:25,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:25,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:13:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:25,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:25,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:25,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:25,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:25,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:25,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:25,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:25,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:13:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:25,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:25,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:25,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:25,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:25,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:13:25,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:25,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:13:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:25,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:25,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:25,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:25,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:25,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:25,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 20:13:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:25,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:25,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:25,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:13:25,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:25,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:13:25,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:13:25,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:25,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 20:13:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:25,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:25,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:25,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:25,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:25,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:25,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:25,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-24 20:13:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:25,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:25,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:25,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:25,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:25,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 20:13:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:25,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:25,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:25,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:25,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:25,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:25,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:25,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:13:25,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749580919] [2020-09-24 20:13:25,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:13:25,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:13:25,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597133035] [2020-09-24 20:13:25,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:13:25,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:13:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:13:25,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:13:25,516 INFO L87 Difference]: Start difference. First operand 406 states and 465 transitions. Second operand 6 states. [2020-09-24 20:13:26,051 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:26,957 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:13:29,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:13:29,777 INFO L93 Difference]: Finished difference Result 1264 states and 1585 transitions. [2020-09-24 20:13:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:13:29,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-09-24 20:13:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:13:29,795 INFO L225 Difference]: With dead ends: 1264 [2020-09-24 20:13:29,796 INFO L226 Difference]: Without dead ends: 968 [2020-09-24 20:13:29,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:13:29,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-09-24 20:13:29,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 859. [2020-09-24 20:13:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-09-24 20:13:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1021 transitions. [2020-09-24 20:13:29,956 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1021 transitions. Word has length 168 [2020-09-24 20:13:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:13:29,956 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1021 transitions. [2020-09-24 20:13:29,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:13:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1021 transitions. [2020-09-24 20:13:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 20:13:29,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:29,963 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] [2020-09-24 20:13:29,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:13:29,963 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:29,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1441534341, now seen corresponding path program 1 times [2020-09-24 20:13:29,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:29,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263352949] [2020-09-24 20:13:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:30,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:30,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-24 20:13:35,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:13:35,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 20:13:35,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:13:35,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 20:13:35,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 20:13:35,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:35,352 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:13:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:13:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:13:35,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-24 20:13:35,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:13:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:35,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:13:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:35,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:35,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:35,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:35,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:13:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:35,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:35,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:35,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:35,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:13:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:35,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:13:35,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:35,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:35,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:13:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:35,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:35,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:35,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:35,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 20:13:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:13:35,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:13:35,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:13:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:35,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 20:13:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:13:35,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:13:35,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:13:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:35,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:13:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 20:13:35,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:35,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:35,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:35,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:35,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:35,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:13:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:35,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:35,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:35,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:35,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 20:13:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:35,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:35,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:35,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 20:13:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:35,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:35,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 20:13:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:35,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:35,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:35,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:13:35,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263352949] [2020-09-24 20:13:35,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:13:35,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:13:35,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480586960] [2020-09-24 20:13:35,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:13:35,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:13:35,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:13:35,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:13:35,819 INFO L87 Difference]: Start difference. First operand 859 states and 1021 transitions. Second operand 6 states. [2020-09-24 20:13:36,319 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:37,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:13:37,127 INFO L93 Difference]: Finished difference Result 1402 states and 1732 transitions. [2020-09-24 20:13:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:13:37,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-09-24 20:13:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:13:37,133 INFO L225 Difference]: With dead ends: 1402 [2020-09-24 20:13:37,133 INFO L226 Difference]: Without dead ends: 622 [2020-09-24 20:13:37,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:13:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-09-24 20:13:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 592. [2020-09-24 20:13:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-09-24 20:13:37,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 654 transitions. [2020-09-24 20:13:37,214 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 654 transitions. Word has length 172 [2020-09-24 20:13:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:13:37,214 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 654 transitions. [2020-09-24 20:13:37,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:13:37,214 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 654 transitions. [2020-09-24 20:13:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 20:13:37,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:37,218 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] [2020-09-24 20:13:37,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:13:37,218 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:37,219 INFO L82 PathProgramCache]: Analyzing trace with hash 95529110, now seen corresponding path program 1 times [2020-09-24 20:13:37,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:37,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708420990] [2020-09-24 20:13:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:13:37,291 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:13:37,291 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:13:37,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:13:37,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:13:37 BoogieIcfgContainer [2020-09-24 20:13:37,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:13:37,328 INFO L168 Benchmark]: Toolchain (without parser) took 29107.36 ms. Allocated memory was 140.5 MB in the beginning and 590.9 MB in the end (delta: 450.4 MB). Free memory was 101.7 MB in the beginning and 85.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 466.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:37,328 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:13:37,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.65 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 171.2 MB in the end (delta: -70.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:37,330 INFO L168 Benchmark]: Boogie Preprocessor took 99.99 ms. Allocated memory is still 203.4 MB. Free memory was 171.2 MB in the beginning and 167.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:37,331 INFO L168 Benchmark]: RCFGBuilder took 1302.59 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 167.3 MB in the beginning and 174.0 MB in the end (delta: -6.7 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:37,332 INFO L168 Benchmark]: TraceAbstraction took 26958.57 ms. Allocated memory was 235.4 MB in the beginning and 590.9 MB in the end (delta: 355.5 MB). Free memory was 172.6 MB in the beginning and 85.8 MB in the end (delta: 86.8 MB). Peak memory consumption was 442.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:37,336 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 736.65 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 171.2 MB in the end (delta: -70.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.99 ms. Allocated memory is still 203.4 MB. Free memory was 171.2 MB in the beginning and 167.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1302.59 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 167.3 MB in the beginning and 174.0 MB in the end (delta: -6.7 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26958.57 ms. Allocated memory was 235.4 MB in the beginning and 590.9 MB in the end (delta: 355.5 MB). Free memory was 172.6 MB in the beginning and 85.8 MB in the end (delta: 86.8 MB). Peak memory consumption was 442.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 541]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L177] int pumpRunning = 0; [L178] int systemActive = 1; [L438] int cleanupTimeShifts = 4; [L715] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L514] int retValue_acc ; [L515] int tmp ; [L519] FCALL select_helpers() [L520] FCALL select_features() [L521] CALL, EXPR valid_product() [L938] int retValue_acc ; [L941] retValue_acc = 1 [L942] return (retValue_acc); [L521] RET, EXPR valid_product() [L521] tmp = valid_product() [L523] COND TRUE \read(tmp) [L525] FCALL setup() [L526] CALL runTest() [L505] CALL test() [L372] int splverifierCounter ; [L373] int tmp ; [L374] int tmp___0 ; [L375] int tmp___1 ; [L376] int tmp___2 ; [L379] splverifierCounter = 0 [L381] COND TRUE 1 [L383] COND TRUE splverifierCounter < 4 [L389] tmp = __VERIFIER_nondet_int() [L391] COND TRUE \read(tmp) [L393] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L393] RET waterRise() [L399] tmp___0 = __VERIFIER_nondet_int() [L401] COND FALSE !(\read(tmp___0)) [L409] tmp___2 = __VERIFIER_nondet_int() [L411] COND FALSE !(\read(tmp___2)) [L415] tmp___1 = __VERIFIER_nondet_int() [L417] COND TRUE \read(tmp___1) [L419] CALL stopSystem() [L358] COND FALSE !(\read(pumpRunning)) [L365] systemActive = 0 [L419] RET stopSystem() [L426] CALL timeShift() [L184] COND FALSE !(\read(pumpRunning)) [L191] COND FALSE !(\read(systemActive)) [L199] CALL __utac_acc__Specification3_spec__1() [L139] int tmp ; [L140] int tmp___0 ; [L141] int tmp___1 ; [L145] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L145] RET, EXPR isMethaneLevelCritical() [L145] tmp = isMethaneLevelCritical() [L147] COND FALSE !(\read(tmp)) [L151] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L151] RET, EXPR getWaterLevel() [L151] tmp___0 = getWaterLevel() [L153] COND TRUE tmp___0 == 2 [L155] CALL, EXPR isPumpRunning() [L291] int retValue_acc ; [L294] retValue_acc = pumpRunning [L295] return (retValue_acc); [L155] RET, EXPR isPumpRunning() [L155] tmp___1 = isPumpRunning() [L157] COND FALSE !(\read(tmp___1)) [L161] CALL __automaton_fail() [L541] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 627 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 743 SDtfs, 1524 SDslu, 1020 SDs, 0 SdLazy, 2250 SolverSat, 522 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=859occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 187 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 490 ConstructedInterpolants, 0 QuantifiedInterpolants, 216772 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...