/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_spec4_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:00:03,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:00:03,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:00:03,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:00:03,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:00:03,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:00:03,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:00:03,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:00:03,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:00:03,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:00:03,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:00:03,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:00:03,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:00:03,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:00:03,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:00:03,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:00:03,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:00:03,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:00:03,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:00:03,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:00:03,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:00:03,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:00:03,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:00:03,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:00:03,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:00:03,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:00:03,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:00:03,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:00:03,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:00:03,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:00:03,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:00:03,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:00:03,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:00:03,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:00:03,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:00:03,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:00:03,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:00:03,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:00:03,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:00:03,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:00:03,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:00:03,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:00:03,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:00:03,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:00:03,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:00:03,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:00:03,507 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:00:03,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:00:03,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:00:03,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:00:03,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:00:03,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:00:03,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:00:03,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:00:03,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:00:03,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:00:03,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:00:03,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:00:03,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:00:03,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:00:03,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:00:03,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:00:03,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:00:03,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:00:03,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:00:03,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:00:03,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:00:03,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:00:03,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:00:03,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:00:03,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:00:03,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:00:04,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:00:04,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:00:04,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:00:04,026 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:00:04,026 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:00:04,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-09-25 11:00:04,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e0ac2023/8173bd52065b4d63bccc5598137b34dd/FLAGdfb93688d [2020-09-25 11:00:04,775 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:00:04,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-09-25 11:00:04,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e0ac2023/8173bd52065b4d63bccc5598137b34dd/FLAGdfb93688d [2020-09-25 11:00:04,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e0ac2023/8173bd52065b4d63bccc5598137b34dd [2020-09-25 11:00:04,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:00:04,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:00:04,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:00:04,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:00:04,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:00:05,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:00:04" (1/1) ... [2020-09-25 11:00:05,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af20ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05, skipping insertion in model container [2020-09-25 11:00:05,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:00:04" (1/1) ... [2020-09-25 11:00:05,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:00:05,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:00:05,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:00:05,556 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:00:05,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:00:05,713 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:00:05,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05 WrapperNode [2020-09-25 11:00:05,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:00:05,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:00:05,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:00:05,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:00:05,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05" (1/1) ... [2020-09-25 11:00:05,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05" (1/1) ... [2020-09-25 11:00:05,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05" (1/1) ... [2020-09-25 11:00:05,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05" (1/1) ... [2020-09-25 11:00:05,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05" (1/1) ... [2020-09-25 11:00:05,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05" (1/1) ... [2020-09-25 11:00:05,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05" (1/1) ... [2020-09-25 11:00:05,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:00:05,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:00:05,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:00:05,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:00:05,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:00:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:00:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:00:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 11:00:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 11:00:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 11:00:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 11:00:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 11:00:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-25 11:00:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 11:00:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 11:00:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 11:00:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 11:00:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 11:00:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 11:00:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 11:00:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 11:00:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 11:00:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 11:00:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 11:00:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 11:00:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:00:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 11:00:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 11:00:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 11:00:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 11:00:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 11:00:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 11:00:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 11:00:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 11:00:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 11:00:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 11:00:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 11:00:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 11:00:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 11:00:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 11:00:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 11:00:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 11:00:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 11:00:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 11:00:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:00:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:00:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 11:00:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 11:00:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 11:00:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 11:00:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 11:00:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 11:00:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 11:00:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 11:00:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 11:00:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 11:00:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 11:00:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 11:00:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 11:00:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 11:00:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 11:00:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 11:00:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 11:00:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 11:00:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 11:00:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-25 11:00:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 11:00:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 11:00:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 11:00:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 11:00:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 11:00:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 11:00:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 11:00:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 11:00:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 11:00:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:00:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 11:00:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 11:00:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 11:00:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:00:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 11:00:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 11:00:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:00:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:00:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:00:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:00:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 11:00:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:00:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 11:00:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 11:00:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:00:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 11:00:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 11:00:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 11:00:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:00:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 11:00:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:00:07,075 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:00:07,075 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 11:00:07,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:00:07 BoogieIcfgContainer [2020-09-25 11:00:07,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:00:07,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:00:07,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:00:07,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:00:07,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:00:04" (1/3) ... [2020-09-25 11:00:07,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7221ea6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:00:07, skipping insertion in model container [2020-09-25 11:00:07,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:00:05" (2/3) ... [2020-09-25 11:00:07,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7221ea6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:00:07, skipping insertion in model container [2020-09-25 11:00:07,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:00:07" (3/3) ... [2020-09-25 11:00:07,092 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-09-25 11:00:07,104 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:00:07,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:00:07,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:00:07,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:00:07,164 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:00:07,164 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:00:07,164 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:00:07,164 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:00:07,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:00:07,165 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:00:07,165 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:00:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states. [2020-09-25 11:00:07,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 11:00:07,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:00:07,217 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] [2020-09-25 11:00:07,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:00:07,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:00:07,226 INFO L82 PathProgramCache]: Analyzing trace with hash 970389308, now seen corresponding path program 1 times [2020-09-25 11:00:07,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:00:07,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079776337] [2020-09-25 11:00:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:00:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:07,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:12,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:12,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 11:00:12,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:00:12,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-09-25 11:00:12,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:12,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:00:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 11:00:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 11:00:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:00:13,184 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 11:00:13,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:00:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:13,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:13,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:00:13,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 11:00:13,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:13,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:00:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 11:00:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:13,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:13,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:13,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:13,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:00:13,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:13,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:13,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 11:00:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:13,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:13,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:13,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:00:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:13,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 11:00:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:13,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:13,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:13,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:00:13,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:13,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:00:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:00:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 11:00:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:13,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:13,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:13,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:13,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:13,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:00:13,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:13,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:13,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:13,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 11:00:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:13,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:13,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:13,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:13,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:00:13,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:13,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:00:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 11:00:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:00:13,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:00:13,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 11:00:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:13,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:13,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:13,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:13,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:13,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:00:13,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:13,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:00:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 11:00:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:00:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:00:13,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079776337] [2020-09-25 11:00:13,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:00:13,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:00:13,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167458480] [2020-09-25 11:00:13,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:00:13,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:00:13,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:00:13,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:00:13,808 INFO L87 Difference]: Start difference. First operand 309 states. Second operand 4 states. [2020-09-25 11:00:14,422 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 11:00:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:00:16,510 INFO L93 Difference]: Finished difference Result 665 states and 797 transitions. [2020-09-25 11:00:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:00:16,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-25 11:00:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:00:16,537 INFO L225 Difference]: With dead ends: 665 [2020-09-25 11:00:16,537 INFO L226 Difference]: Without dead ends: 467 [2020-09-25 11:00:16,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:00:16,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-09-25 11:00:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 394. [2020-09-25 11:00:16,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-25 11:00:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 433 transitions. [2020-09-25 11:00:16,700 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 433 transitions. Word has length 142 [2020-09-25 11:00:16,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:00:16,701 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 433 transitions. [2020-09-25 11:00:16,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:00:16,702 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 433 transitions. [2020-09-25 11:00:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 11:00:16,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:00:16,707 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] [2020-09-25 11:00:16,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:00:16,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:00:16,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:00:16,708 INFO L82 PathProgramCache]: Analyzing trace with hash -825115648, now seen corresponding path program 1 times [2020-09-25 11:00:16,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:00:16,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669107538] [2020-09-25 11:00:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:00:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:16,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:21,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:21,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 11:00:21,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:00:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 11:00:21,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:21,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:00:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 11:00:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 11:00:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:22,190 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 11:00:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:00:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:22,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:22,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:00:22,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:22,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 11:00:22,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:22,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:00:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:22,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 11:00:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:22,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:22,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:22,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:00:22,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:22,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:22,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:22,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 11:00:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:22,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:22,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:00:22,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:22,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:22,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 11:00:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:22,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:22,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:22,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:00:22,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:22,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:00:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 11:00:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:22,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:00:22,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:22,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 11:00:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:22,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:22,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:00:22,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:00:22,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:22,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:00:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:22,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:00:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:22,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:22,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:22,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:00:22,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:22,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:00:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:00:22,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 11:00:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:22,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:22,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:22,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:22,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:22,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:00:22,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:22,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:00:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:00:22,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 11:00:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:22,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:00:22,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:22,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:00:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 11:00:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:00:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:22,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:00:22,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669107538] [2020-09-25 11:00:22,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:00:22,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 11:00:22,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992389060] [2020-09-25 11:00:22,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:00:22,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:00:22,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:00:22,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:00:22,643 INFO L87 Difference]: Start difference. First operand 394 states and 433 transitions. Second operand 9 states. [2020-09-25 11:00:23,129 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 11:00:24,806 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-25 11:00:25,147 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 11:00:25,845 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-25 11:00:26,295 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 11:00:26,687 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 11:00:27,022 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 11:00:27,381 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 11:00:29,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:00:29,119 INFO L93 Difference]: Finished difference Result 1140 states and 1400 transitions. [2020-09-25 11:00:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:00:29,122 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-09-25 11:00:29,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:00:29,145 INFO L225 Difference]: With dead ends: 1140 [2020-09-25 11:00:29,145 INFO L226 Difference]: Without dead ends: 856 [2020-09-25 11:00:29,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:00:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2020-09-25 11:00:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 673. [2020-09-25 11:00:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-09-25 11:00:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 759 transitions. [2020-09-25 11:00:29,305 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 759 transitions. Word has length 151 [2020-09-25 11:00:29,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:00:29,306 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 759 transitions. [2020-09-25 11:00:29,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:00:29,306 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 759 transitions. [2020-09-25 11:00:29,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 11:00:29,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:00:29,310 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] [2020-09-25 11:00:29,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:00:29,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:00:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:00:29,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2016778957, now seen corresponding path program 1 times [2020-09-25 11:00:29,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:00:29,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048195320] [2020-09-25 11:00:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:00:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:29,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:29,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:34,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:34,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 11:00:34,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:00:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:00:34,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:34,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:34,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:00:34,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 11:00:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:00:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:34,810 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 11:00:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:00:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:34,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:35,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:35,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:00:35,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 11:00:35,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:35,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 11:00:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:35,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 11:00:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:35,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:35,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:35,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:35,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:00:35,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:35,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 11:00:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:35,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:35,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:35,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:35,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:35,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:00:35,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:35,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:35,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 11:00:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:35,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:35,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:35,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:35,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:00:35,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:35,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:00:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:00:35,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 11:00:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:35,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:35,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:35,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:35,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:35,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:00:35,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:35,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:35,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:00:35,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 11:00:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:35,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:35,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:00:35,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:00:35,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:35,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:00:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:00:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:00:35,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-25 11:00:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:35,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:35,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:35,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:00:35,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:35,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:00:35,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:35,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:35,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:00:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:00:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:00:35,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:00:35,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:00:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:35,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:35,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:35,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:00:35,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:35,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:00:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:00:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:35,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 11:00:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:35,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:35,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:35,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:35,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:00:35,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:35,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:00:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 11:00:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:00:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 11:00:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:35,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:35,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:35,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:35,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:00:35,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:35,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:00:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 11:00:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:00:35,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:00:35,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048195320] [2020-09-25 11:00:35,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:00:35,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:00:35,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783000493] [2020-09-25 11:00:35,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:00:35,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:00:35,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:00:35,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:00:35,324 INFO L87 Difference]: Start difference. First operand 673 states and 759 transitions. Second operand 6 states. [2020-09-25 11:00:35,866 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 11:00:38,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:00:38,317 INFO L93 Difference]: Finished difference Result 1740 states and 2195 transitions. [2020-09-25 11:00:38,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:00:38,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 11:00:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:00:38,332 INFO L225 Difference]: With dead ends: 1740 [2020-09-25 11:00:38,332 INFO L226 Difference]: Without dead ends: 1177 [2020-09-25 11:00:38,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:00:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2020-09-25 11:00:38,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 969. [2020-09-25 11:00:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-09-25 11:00:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1138 transitions. [2020-09-25 11:00:38,503 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1138 transitions. Word has length 156 [2020-09-25 11:00:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:00:38,504 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1138 transitions. [2020-09-25 11:00:38,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:00:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1138 transitions. [2020-09-25 11:00:38,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 11:00:38,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:00:38,509 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] [2020-09-25 11:00:38,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:00:38,509 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:00:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:00:38,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1959475557, now seen corresponding path program 1 times [2020-09-25 11:00:38,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:00:38,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817482722] [2020-09-25 11:00:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:00:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:38,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:39,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:40,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:43,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:43,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 11:00:43,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:00:43,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 11:00:43,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:43,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:00:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 11:00:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 11:00:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:00:43,957 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 11:00:43,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:00:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:44,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:44,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:00:44,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:44,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 11:00:44,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:44,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 11:00:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:44,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 11:00:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:44,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:44,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:44,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:44,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:00:44,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:44,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:44,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:44,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 11:00:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:44,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:44,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:44,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:00:44,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:44,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:44,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:00:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 11:00:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:44,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:44,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:44,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:44,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:00:44,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:44,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:44,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:00:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:44,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 11:00:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:44,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:44,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:44,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:00:44,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:44,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:00:44,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:44,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:44,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:44,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:44,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:00:44,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 11:00:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:44,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:44,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:44,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:00:44,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:00:44,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:44,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:00:44,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-25 11:00:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:44,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:44,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:00:44,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:00:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:00:44,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:44,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:00:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:00:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:00:44,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 11:00:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:44,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:44,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:44,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:44,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:44,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:00:44,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:44,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:00:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:00:44,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:00:44,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 11:00:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:44,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:44,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:00:44,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:00:44,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:00:44,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:00:44,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:00:44,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:00:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:00:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:00:44,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:00:44,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:00:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:00:44,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817482722] [2020-09-25 11:00:44,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:00:44,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 11:00:44,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944874764] [2020-09-25 11:00:44,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:00:44,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:00:44,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:00:44,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:00:44,497 INFO L87 Difference]: Start difference. First operand 969 states and 1138 transitions. Second operand 11 states. [2020-09-25 11:00:45,134 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 11:00:46,640 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 11:00:46,961 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 11:00:47,294 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 11:00:47,690 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 11:00:48,007 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 11:00:48,805 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 11:00:49,094 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 11:00:49,490 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 11:00:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:00:51,008 INFO L93 Difference]: Finished difference Result 1187 states and 1479 transitions. [2020-09-25 11:00:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:00:51,009 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 166 [2020-09-25 11:00:51,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:00:51,017 INFO L225 Difference]: With dead ends: 1187 [2020-09-25 11:00:51,017 INFO L226 Difference]: Without dead ends: 1184 [2020-09-25 11:00:51,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2020-09-25 11:00:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2020-09-25 11:00:51,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 969. [2020-09-25 11:00:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-09-25 11:00:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1136 transitions. [2020-09-25 11:00:51,137 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1136 transitions. Word has length 166 [2020-09-25 11:00:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:00:51,138 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1136 transitions. [2020-09-25 11:00:51,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:00:51,138 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1136 transitions. [2020-09-25 11:00:51,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 11:00:51,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:00:51,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:00:51,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:00:51,143 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:00:51,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:00:51,144 INFO L82 PathProgramCache]: Analyzing trace with hash 65821415, now seen corresponding path program 1 times [2020-09-25 11:00:51,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:00:51,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417204810] [2020-09-25 11:00:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:00:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:00:51,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:00:51,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking...