/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 interpolation-heuristic=FIRST --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_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:47:17,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:47:17,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:47:17,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:47:17,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:47:17,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:47:17,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:47:17,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:47:17,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:47:17,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:47:17,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:47:17,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:47:17,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:47:17,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:47:17,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:47:17,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:47:17,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:47:17,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:47:17,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:47:17,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:47:17,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:47:17,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:47:17,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:47:17,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:47:17,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:47:17,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:47:17,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:47:17,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:47:17,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:47:17,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:47:17,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:47:17,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:47:17,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:47:17,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:47:17,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:47:17,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:47:17,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:47:17,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:47:17,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:47:17,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:47:17,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:47:17,166 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 15:47:17,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:47:17,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:47:17,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:47:17,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:47:17,213 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:47:17,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:47:17,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:47:17,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:47:17,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:47:17,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:47:17,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:47:17,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:47:17,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:47:17,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:47:17,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:47:17,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:47:17,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:47:17,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:47:17,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:47:17,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:47:17,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:47:17,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:47:17,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:47:17,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:47:17,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:47:17,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:47:17,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:47:17,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:47:17,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:47:17,219 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:47:17,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:47:17,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:47:17,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:47:17,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:47:17,690 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:47:17,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2020-09-24 15:47:17,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/781d57577/6aad7f5df18749c89b03254d07f70a28/FLAG64278e1e5 [2020-09-24 15:47:18,397 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:47:18,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2020-09-24 15:47:18,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/781d57577/6aad7f5df18749c89b03254d07f70a28/FLAG64278e1e5 [2020-09-24 15:47:18,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/781d57577/6aad7f5df18749c89b03254d07f70a28 [2020-09-24 15:47:18,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:47:18,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:47:18,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:47:18,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:47:18,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:47:18,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:47:18" (1/1) ... [2020-09-24 15:47:18,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfafcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:18, skipping insertion in model container [2020-09-24 15:47:18,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:47:18" (1/1) ... [2020-09-24 15:47:18,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:47:18,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:47:19,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:47:19,288 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:47:19,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:47:19,481 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:47:19,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:19 WrapperNode [2020-09-24 15:47:19,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:47:19,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:47:19,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:47:19,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:47:19,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:19" (1/1) ... [2020-09-24 15:47:19,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:19" (1/1) ... [2020-09-24 15:47:19,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:19" (1/1) ... [2020-09-24 15:47:19,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:19" (1/1) ... [2020-09-24 15:47:19,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:19" (1/1) ... [2020-09-24 15:47:19,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:19" (1/1) ... [2020-09-24 15:47:19,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:19" (1/1) ... [2020-09-24 15:47:19,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:47:19,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:47:19,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:47:19,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:47:19,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:19" (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 15:47:19,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:47:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:47:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 15:47:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 15:47:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 15:47:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 15:47:19,648 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 15:47:19,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:47:19,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 15:47:19,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:47:19,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 15:47:19,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 15:47:19,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 15:47:19,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 15:47:19,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 15:47:19,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 15:47:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 15:47:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 15:47:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 15:47:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 15:47:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 15:47:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 15:47:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 15:47:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 15:47:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 15:47:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 15:47:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 15:47:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 15:47:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 15:47:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 15:47:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 15:47:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 15:47:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 15:47:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 15:47:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 15:47:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 15:47:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 15:47:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 15:47:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 15:47:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:47:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:47:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 15:47:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 15:47:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 15:47:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 15:47:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 15:47:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 15:47:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 15:47:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 15:47:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 15:47:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 15:47:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 15:47:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 15:47:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 15:47:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:47:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 15:47:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 15:47:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 15:47:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 15:47:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:47:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 15:47:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:47:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:47:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 15:47:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:47:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:47:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:47:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:47:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 15:47:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:47:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 15:47:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 15:47:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:47:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 15:47:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 15:47:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:47:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 15:47:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 15:47:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 15:47:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 15:47:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 15:47:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 15:47:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 15:47:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 15:47:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 15:47:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 15:47:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 15:47:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 15:47:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 15:47:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:47:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:47:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:47:20,809 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:47:20,809 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 15:47:20,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:47:20 BoogieIcfgContainer [2020-09-24 15:47:20,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:47:20,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:47:20,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:47:20,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:47:20,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:47:18" (1/3) ... [2020-09-24 15:47:20,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1cb83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:47:20, skipping insertion in model container [2020-09-24 15:47:20,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:19" (2/3) ... [2020-09-24 15:47:20,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1cb83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:47:20, skipping insertion in model container [2020-09-24 15:47:20,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:47:20" (3/3) ... [2020-09-24 15:47:20,826 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product43.cil.c [2020-09-24 15:47:20,838 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:47:20,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:47:20,874 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:47:20,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:47:20,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:47:20,911 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:47:20,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:47:20,911 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:47:20,911 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:47:20,911 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:47:20,911 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:47:20,943 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-09-24 15:47:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 15:47:20,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:20,964 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 15:47:20,965 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:20,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:20,974 INFO L82 PathProgramCache]: Analyzing trace with hash -377200977, now seen corresponding path program 1 times [2020-09-24 15:47:20,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:20,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308082114] [2020-09-24 15:47:20,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,345 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,346 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,346 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,346 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 15:47:21,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 15:47:21,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 15:47:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:21,839 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:21,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,861 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,861 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,862 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,862 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:21,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:21,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:21,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:22,005 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:22,005 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:22,005 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:22,005 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:22,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:22,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:22,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:22,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:22,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:22,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:22,012 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:22,012 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:22,012 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:22,013 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:22,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:22,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:22,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:22,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:22,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:22,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:22,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:22,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:22,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:22,020 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:22,020 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:22,020 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:22,021 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:22,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:22,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:22,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:22,028 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:22,028 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:22,028 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:22,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:22,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:22,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:22,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:22,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:22,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:22,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:22,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:22,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:47:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:22,035 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:22,035 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:22,035 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:22,036 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:22,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:22,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:22,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:22,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:47:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:22,046 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:22,046 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:22,046 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:22,046 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:22,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:22,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:22,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:22,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:47:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:22,055 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:22,055 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:22,055 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:22,056 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:22,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:22,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:22,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:22,091 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 15:47:22,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308082114] [2020-09-24 15:47:22,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:22,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 15:47:22,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522294787] [2020-09-24 15:47:22,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 15:47:22,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:22,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 15:47:22,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:47:22,129 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 3 states. [2020-09-24 15:47:23,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:23,580 INFO L93 Difference]: Finished difference Result 497 states and 588 transitions. [2020-09-24 15:47:23,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 15:47:23,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 15:47:23,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:23,603 INFO L225 Difference]: With dead ends: 497 [2020-09-24 15:47:23,603 INFO L226 Difference]: Without dead ends: 307 [2020-09-24 15:47:23,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:47:23,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-24 15:47:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 264. [2020-09-24 15:47:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-09-24 15:47:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 286 transitions. [2020-09-24 15:47:23,742 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 286 transitions. Word has length 153 [2020-09-24 15:47:23,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:23,746 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 286 transitions. [2020-09-24 15:47:23,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 15:47:23,746 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 286 transitions. [2020-09-24 15:47:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 15:47:23,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:23,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:23,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:47:23,759 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:23,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1698755128, now seen corresponding path program 1 times [2020-09-24 15:47:23,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:23,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310018684] [2020-09-24 15:47:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:23,840 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:23,841 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:23,841 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:23,841 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:23,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 15:47:23,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:47:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 15:47:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 15:47:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:24,247 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:24,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,258 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,258 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,258 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,259 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:24,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:24,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,325 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,325 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,325 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,325 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:24,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:24,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:24,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,331 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,331 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,331 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,332 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:24,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:24,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,336 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,337 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,337 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,337 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:24,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:24,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,343 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,343 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,343 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,344 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:24,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:24,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:24,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 15:47:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,349 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,350 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,350 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,350 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:24,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:24,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 15:47:24,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 15:47:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,358 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,359 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,359 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,359 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:24,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 15:47:24,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 15:47:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,367 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,367 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,367 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,367 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:24,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:24,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:24,396 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 15:47:24,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310018684] [2020-09-24 15:47:24,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:24,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:47:24,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959213380] [2020-09-24 15:47:24,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:47:24,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:24,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:47:24,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:47:24,402 INFO L87 Difference]: Start difference. First operand 264 states and 286 transitions. Second operand 4 states. [2020-09-24 15:47:25,139 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:47:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:26,205 INFO L93 Difference]: Finished difference Result 405 states and 453 transitions. [2020-09-24 15:47:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:47:26,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 15:47:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:26,211 INFO L225 Difference]: With dead ends: 405 [2020-09-24 15:47:26,211 INFO L226 Difference]: Without dead ends: 290 [2020-09-24 15:47:26,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:47:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-24 15:47:26,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 254. [2020-09-24 15:47:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-24 15:47:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 273 transitions. [2020-09-24 15:47:26,255 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 273 transitions. Word has length 154 [2020-09-24 15:47:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:26,256 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 273 transitions. [2020-09-24 15:47:26,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:47:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 273 transitions. [2020-09-24 15:47:26,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 15:47:26,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:26,259 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] [2020-09-24 15:47:26,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:47:26,260 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:26,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:26,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1272338923, now seen corresponding path program 1 times [2020-09-24 15:47:26,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:26,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288682638] [2020-09-24 15:47:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:26,367 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-24 15:47:26,367 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:26,368 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:26,368 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:26,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 15:47:26,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:26,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 15:47:26,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:26,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:47:26,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 15:47:26,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:47:26,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:26,859 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:26,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:26,957 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:26,957 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:26,957 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:26,958 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:26,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:26,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:26,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:26,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 15:47:26,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:27,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,063 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,063 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,063 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,064 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:27,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:27,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:27,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:27,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,085 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,092 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:27,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 15:47:27,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:27,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,100 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,101 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,101 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:27,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:27,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:27,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,110 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,111 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,111 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,112 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:27,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:27,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:47:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,117 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,117 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,117 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,118 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:27,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:27,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:27,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:47:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,123 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,123 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,123 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:27,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:27,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-24 15:47:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,129 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,129 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,129 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,129 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:27,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:27,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,198 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 15:47:27,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288682638] [2020-09-24 15:47:27,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:27,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:47:27,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241028256] [2020-09-24 15:47:27,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:47:27,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:27,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:47:27,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:47:27,204 INFO L87 Difference]: Start difference. First operand 254 states and 273 transitions. Second operand 4 states. [2020-09-24 15:47:27,954 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:29,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:29,607 INFO L93 Difference]: Finished difference Result 590 states and 668 transitions. [2020-09-24 15:47:29,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:47:29,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-24 15:47:29,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:29,613 INFO L225 Difference]: With dead ends: 590 [2020-09-24 15:47:29,613 INFO L226 Difference]: Without dead ends: 446 [2020-09-24 15:47:29,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:47:29,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-09-24 15:47:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 386. [2020-09-24 15:47:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-24 15:47:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 423 transitions. [2020-09-24 15:47:29,685 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 423 transitions. Word has length 163 [2020-09-24 15:47:29,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:29,686 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 423 transitions. [2020-09-24 15:47:29,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:47:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 423 transitions. [2020-09-24 15:47:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 15:47:29,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:29,690 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] [2020-09-24 15:47:29,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:47:29,690 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:29,691 INFO L82 PathProgramCache]: Analyzing trace with hash 834967554, now seen corresponding path program 1 times [2020-09-24 15:47:29,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:29,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409133416] [2020-09-24 15:47:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:29,782 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:29,782 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:29,782 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:29,783 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:29,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 15:47:29,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:29,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 15:47:29,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:47:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 15:47:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 15:47:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,066 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:30,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,103 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,103 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,104 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,104 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:30,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:30,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:30,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 15:47:30,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,186 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,186 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,186 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,187 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:30,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:30,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,192 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,192 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,192 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,192 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:30,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,198 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,198 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,198 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,198 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:30,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:30,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,204 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,204 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,204 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,205 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:30,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 15:47:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,223 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,223 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,223 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,224 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 15:47:30,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:30,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:47:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 15:47:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 15:47:30,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:47:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,277 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,277 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,277 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,278 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:30,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:30,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 15:47:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,282 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,282 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,283 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:30,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 15:47:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,287 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,288 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,288 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,288 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:30,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:30,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 15:47:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,293 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,293 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,293 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:30,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:30,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,328 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 15:47:30,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409133416] [2020-09-24 15:47:30,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:30,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 15:47:30,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40907071] [2020-09-24 15:47:30,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:47:30,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:30,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:47:30,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:47:30,331 INFO L87 Difference]: Start difference. First operand 386 states and 423 transitions. Second operand 7 states. [2020-09-24 15:47:30,968 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:32,782 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:33,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:33,488 INFO L93 Difference]: Finished difference Result 998 states and 1153 transitions. [2020-09-24 15:47:33,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:47:33,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-24 15:47:33,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:33,494 INFO L225 Difference]: With dead ends: 998 [2020-09-24 15:47:33,494 INFO L226 Difference]: Without dead ends: 722 [2020-09-24 15:47:33,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:47:33,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-09-24 15:47:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 629. [2020-09-24 15:47:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2020-09-24 15:47:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 692 transitions. [2020-09-24 15:47:33,603 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 692 transitions. Word has length 171 [2020-09-24 15:47:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:33,604 INFO L479 AbstractCegarLoop]: Abstraction has 629 states and 692 transitions. [2020-09-24 15:47:33,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:47:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 692 transitions. [2020-09-24 15:47:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 15:47:33,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:33,607 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 15:47:33,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:47:33,607 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:33,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1418606569, now seen corresponding path program 1 times [2020-09-24 15:47:33,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:33,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816881784] [2020-09-24 15:47:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:33,697 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:33,698 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:33,698 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:33,698 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:33,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 15:47:33,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 15:47:33,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:47:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 15:47:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 15:47:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,053 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,096 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,096 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,097 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,097 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:34,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:34,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 15:47:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,165 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,165 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,165 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,165 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:34,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,173 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,174 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:34,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:34,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:34,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,181 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,182 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,182 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,182 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:34,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:34,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:34,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:34,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,189 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,190 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,190 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,190 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:34,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:34,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:34,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 15:47:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,216 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,216 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,216 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 15:47:34,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:47:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:34,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 15:47:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,224 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,224 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,224 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:34,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:34,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 15:47:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,236 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,236 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,236 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:47:34,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:47:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:34,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 15:47:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,276 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,276 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,276 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,276 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:34,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,318 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 15:47:34,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816881784] [2020-09-24 15:47:34,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:34,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 15:47:34,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886720666] [2020-09-24 15:47:34,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:47:34,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:34,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:47:34,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:47:34,322 INFO L87 Difference]: Start difference. First operand 629 states and 692 transitions. Second operand 9 states. [2020-09-24 15:47:34,796 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:36,174 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:36,494 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:36,874 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:37,230 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:37,575 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:37,891 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:38,186 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:39,686 INFO L93 Difference]: Finished difference Result 1684 states and 1977 transitions. [2020-09-24 15:47:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:47:39,687 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-24 15:47:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:39,698 INFO L225 Difference]: With dead ends: 1684 [2020-09-24 15:47:39,698 INFO L226 Difference]: Without dead ends: 1165 [2020-09-24 15:47:39,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:47:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-09-24 15:47:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1087. [2020-09-24 15:47:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-09-24 15:47:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1225 transitions. [2020-09-24 15:47:39,922 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1225 transitions. Word has length 172 [2020-09-24 15:47:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:39,923 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1225 transitions. [2020-09-24 15:47:39,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:47:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1225 transitions. [2020-09-24 15:47:39,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 15:47:39,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:39,927 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 15:47:39,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:47:39,927 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:39,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1797665662, now seen corresponding path program 1 times [2020-09-24 15:47:39,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:39,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925208614] [2020-09-24 15:47:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:47:40,054 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:47:40,054 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:47:40,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:47:40,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:47:40 BoogieIcfgContainer [2020-09-24 15:47:40,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:47:40,097 INFO L168 Benchmark]: Toolchain (without parser) took 21405.44 ms. Allocated memory was 141.0 MB in the beginning and 587.7 MB in the end (delta: 446.7 MB). Free memory was 102.7 MB in the beginning and 459.5 MB in the end (delta: -356.8 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:40,098 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:47:40,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 786.19 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 174.6 MB in the end (delta: -72.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:40,100 INFO L168 Benchmark]: Boogie Preprocessor took 89.86 ms. Allocated memory is still 205.0 MB. Free memory was 174.6 MB in the beginning and 170.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:40,101 INFO L168 Benchmark]: RCFGBuilder took 1243.52 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 170.6 MB in the beginning and 175.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:40,101 INFO L168 Benchmark]: TraceAbstraction took 19277.55 ms. Allocated memory was 235.4 MB in the beginning and 587.7 MB in the end (delta: 352.3 MB). Free memory was 174.1 MB in the beginning and 459.5 MB in the end (delta: -285.4 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:40,105 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 786.19 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 174.6 MB in the end (delta: -72.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.86 ms. Allocated memory is still 205.0 MB. Free memory was 174.6 MB in the beginning and 170.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1243.52 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 170.6 MB in the beginning and 175.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19277.55 ms. Allocated memory was 235.4 MB in the beginning and 587.7 MB in the end (delta: 352.3 MB). Free memory was 174.1 MB in the beginning and 459.5 MB in the end (delta: -285.4 MB). Peak memory consumption was 66.9 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; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L597] int pumpRunning = 0; [L598] int systemActive = 1; [L849] int waterLevel = 1; [L850] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L582] int retValue_acc ; [L585] retValue_acc = 1 [L586] 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() [L783] int splverifierCounter ; [L784] int tmp ; [L785] int tmp___0 ; [L786] int tmp___1 ; [L787] int tmp___2 ; [L790] splverifierCounter = 0 [L792] COND TRUE 1 [L794] COND TRUE splverifierCounter < 4 [L800] tmp = __VERIFIER_nondet_int() [L802] COND TRUE \read(tmp) [L804] CALL waterRise() [L867] COND TRUE waterLevel < 2 [L868] waterLevel = waterLevel + 1 [L804] RET waterRise() [L810] tmp___0 = __VERIFIER_nondet_int() [L812] COND FALSE !(\read(tmp___0)) [L820] tmp___2 = __VERIFIER_nondet_int() [L822] COND FALSE !(\read(tmp___2)) [L826] tmp___1 = __VERIFIER_nondet_int() [L828] COND TRUE \read(tmp___1) [L830] CALL stopSystem() [L770] COND FALSE !(\read(pumpRunning)) [L777] systemActive = 0 [L830] RET stopSystem() [L837] CALL timeShift() [L604] COND FALSE !(\read(pumpRunning)) [L611] COND FALSE !(\read(systemActive)) [L619] CALL __utac_acc__Specification3_spec__1() [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L163] CALL, EXPR isMethaneLevelCritical() [L888] int retValue_acc ; [L891] retValue_acc = methaneLevelCritical [L892] return (retValue_acc); [L163] RET, EXPR isMethaneLevelCritical() [L163] tmp = isMethaneLevelCritical() [L165] COND FALSE !(\read(tmp)) [L169] CALL, EXPR getWaterLevel() [L920] int retValue_acc ; [L923] retValue_acc = waterLevel [L924] return (retValue_acc); [L169] RET, EXPR getWaterLevel() [L169] tmp___0 = getWaterLevel() [L171] COND TRUE tmp___0 == 2 [L173] CALL, EXPR isPumpRunning() [L703] int retValue_acc ; [L706] retValue_acc = pumpRunning [L707] return (retValue_acc); [L173] RET, EXPR isPumpRunning() [L173] tmp___1 = isPumpRunning() [L175] COND FALSE !(\read(tmp___1)) [L179] CALL __automaton_fail() [L148] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 627 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1263 SDtfs, 1614 SDslu, 1067 SDs, 0 SdLazy, 2692 SolverSat, 523 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1087occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 310 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 990 NumberOfCodeBlocks, 990 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 808 ConstructedInterpolants, 0 QuantifiedInterpolants, 335642 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...