/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:32:07,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:32:07,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:32:07,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:32:08,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:32:08,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:32:08,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:32:08,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:32:08,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:32:08,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:32:08,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:32:08,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:32:08,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:32:08,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:32:08,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:32:08,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:32:08,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:32:08,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:32:08,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:32:08,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:32:08,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:32:08,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:32:08,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:32:08,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:32:08,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:32:08,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:32:08,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:32:08,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:32:08,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:32:08,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:32:08,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:32:08,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:32:08,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:32:08,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:32:08,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:32:08,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:32:08,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:32:08,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:32:08,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:32:08,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:32:08,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:32:08,042 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 07:32:08,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:32:08,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:32:08,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:32:08,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:32:08,090 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:32:08,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:32:08,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:32:08,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:32:08,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:32:08,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:32:08,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:32:08,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:32:08,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:32:08,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:32:08,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:32:08,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:32:08,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:32:08,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:32:08,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:32:08,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:32:08,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:32:08,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:32:08,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:32:08,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:32:08,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:32:08,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:32:08,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:32:08,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:32:08,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:32:08,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:32:08,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:32:08,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:32:08,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:32:08,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:32:08,674 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:32:08,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product18.cil.c [2020-09-25 07:32:08,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06dd8f97b/16a362b2345a490abebc22924ef3ed09/FLAG1fb4cd57b [2020-09-25 07:32:09,431 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:32:09,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product18.cil.c [2020-09-25 07:32:09,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06dd8f97b/16a362b2345a490abebc22924ef3ed09/FLAG1fb4cd57b [2020-09-25 07:32:09,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06dd8f97b/16a362b2345a490abebc22924ef3ed09 [2020-09-25 07:32:09,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:32:09,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:32:09,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:32:09,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:32:09,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:32:09,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:32:09" (1/1) ... [2020-09-25 07:32:09,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:09, skipping insertion in model container [2020-09-25 07:32:09,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:32:09" (1/1) ... [2020-09-25 07:32:09,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:32:09,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:32:10,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:32:10,260 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:32:10,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:32:10,496 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:32:10,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:10 WrapperNode [2020-09-25 07:32:10,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:32:10,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:32:10,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:32:10,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:32:10,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:10" (1/1) ... [2020-09-25 07:32:10,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:10" (1/1) ... [2020-09-25 07:32:10,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:10" (1/1) ... [2020-09-25 07:32:10,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:10" (1/1) ... [2020-09-25 07:32:10,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:10" (1/1) ... [2020-09-25 07:32:10,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:10" (1/1) ... [2020-09-25 07:32:10,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:10" (1/1) ... [2020-09-25 07:32:10,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:32:10,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:32:10,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:32:10,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:32:10,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:10" (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 07:32:10,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:32:10,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:32:10,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 07:32:10,706 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 07:32:10,706 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 07:32:10,706 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 07:32:10,707 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 07:32:10,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:32:10,708 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 07:32:10,708 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 07:32:10,708 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 07:32:10,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 07:32:10,709 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 07:32:10,709 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 07:32:10,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 07:32:10,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 07:32:10,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 07:32:10,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 07:32:10,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 07:32:10,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 07:32:10,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 07:32:10,712 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 07:32:10,712 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 07:32:10,713 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 07:32:10,713 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 07:32:10,714 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 07:32:10,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 07:32:10,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 07:32:10,714 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 07:32:10,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 07:32:10,715 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 07:32:10,715 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 07:32:10,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 07:32:10,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 07:32:10,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 07:32:10,715 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 07:32:10,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 07:32:10,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 07:32:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:32:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:32:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 07:32:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 07:32:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 07:32:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 07:32:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 07:32:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 07:32:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 07:32:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 07:32:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 07:32:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 07:32:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 07:32:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 07:32:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 07:32:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:32:10,720 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 07:32:10,720 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 07:32:10,720 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 07:32:10,720 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 07:32:10,720 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 07:32:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:32:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 07:32:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:32:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:32:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 07:32:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:32:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:32:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:32:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:32:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 07:32:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:32:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 07:32:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 07:32:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:32:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 07:32:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 07:32:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 07:32:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 07:32:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 07:32:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 07:32:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 07:32:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 07:32:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 07:32:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 07:32:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 07:32:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 07:32:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 07:32:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 07:32:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:32:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 07:32:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:32:11,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:32:11,960 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 07:32:11,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:32:11 BoogieIcfgContainer [2020-09-25 07:32:11,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:32:11,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:32:11,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:32:11,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:32:11,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:32:09" (1/3) ... [2020-09-25 07:32:11,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17140018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:32:11, skipping insertion in model container [2020-09-25 07:32:11,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:32:10" (2/3) ... [2020-09-25 07:32:11,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17140018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:32:11, skipping insertion in model container [2020-09-25 07:32:11,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:32:11" (3/3) ... [2020-09-25 07:32:11,977 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product18.cil.c [2020-09-25 07:32:11,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:32:12,001 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:32:12,024 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:32:12,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:32:12,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:32:12,055 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:32:12,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:32:12,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:32:12,055 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:32:12,055 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:32:12,055 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:32:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-09-25 07:32:12,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 07:32:12,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:32:12,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:32:12,105 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:32:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:32:12,114 INFO L82 PathProgramCache]: Analyzing trace with hash -255597227, now seen corresponding path program 1 times [2020-09-25 07:32:12,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:32:12,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281945500] [2020-09-25 07:32:12,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:32:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:17,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:17,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 07:32:17,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:32:17,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 07:32:17,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:17,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 07:32:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 07:32:18,074 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:32:18,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:32:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:18,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:18,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:32:18,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 07:32:18,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:18,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:32:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:18,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:18,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:18,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:18,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:18,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:32:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:18,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:18,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:18,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:18,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:18,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:32:18,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:18,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:18,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:18,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:32:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:18,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:18,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:18,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:18,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:32:18,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:18,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:18,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:32:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:18,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:18,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:18,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:18,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:18,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:18,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:18,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:18,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 07:32:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:18,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:18,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:18,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:18,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:18,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:18,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 07:32:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:18,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:18,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:18,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:32:18,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:18,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:18,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 07:32:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:18,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:18,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:18,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:18,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:18,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:18,459 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 07:32:18,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281945500] [2020-09-25 07:32:18,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:32:18,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:32:18,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135093799] [2020-09-25 07:32:18,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:32:18,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:32:18,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:32:18,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:32:18,496 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 3 states. [2020-09-25 07:32:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:32:19,953 INFO L93 Difference]: Finished difference Result 444 states and 527 transitions. [2020-09-25 07:32:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:32:19,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 07:32:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:32:19,976 INFO L225 Difference]: With dead ends: 444 [2020-09-25 07:32:19,976 INFO L226 Difference]: Without dead ends: 279 [2020-09-25 07:32:19,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:32:20,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-25 07:32:20,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 239. [2020-09-25 07:32:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-25 07:32:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 257 transitions. [2020-09-25 07:32:20,124 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 257 transitions. Word has length 153 [2020-09-25 07:32:20,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:32:20,127 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 257 transitions. [2020-09-25 07:32:20,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:32:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 257 transitions. [2020-09-25 07:32:20,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 07:32:20,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:32:20,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:32:20,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:32:20,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:32:20,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:32:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash 73238065, now seen corresponding path program 1 times [2020-09-25 07:32:20,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:32:20,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687371703] [2020-09-25 07:32:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:32:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:20,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:25,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:25,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 07:32:25,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:32:25,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 07:32:25,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:25,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:25,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:25,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 07:32:25,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:32:25,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:25,545 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:32:25,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:32:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:25,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:25,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:25,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:32:25,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:25,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 07:32:25,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:25,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:25,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:25,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:32:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:25,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:25,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:25,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:25,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:25,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:25,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:25,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:25,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:32:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:25,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:25,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:25,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:25,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:25,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:25,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:25,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:25,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:25,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:32:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:25,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:25,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:25,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:25,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:25,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:25,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:25,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:32:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:25,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:25,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:25,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:25,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:25,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:25,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 07:32:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:25,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:25,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:25,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:25,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:25,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:25,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 07:32:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:25,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:25,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:25,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:25,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:25,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:25,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:25,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:25,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:25,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:25,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:32:25,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 07:32:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:25,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:25,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:25,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:25,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:25,787 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 07:32:25,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687371703] [2020-09-25 07:32:25,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:32:25,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:32:25,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244096024] [2020-09-25 07:32:25,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:32:25,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:32:25,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:32:25,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:32:25,793 INFO L87 Difference]: Start difference. First operand 239 states and 257 transitions. Second operand 4 states. [2020-09-25 07:32:26,408 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:32:27,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:32:27,301 INFO L93 Difference]: Finished difference Result 357 states and 398 transitions. [2020-09-25 07:32:27,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:32:27,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 07:32:27,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:32:27,306 INFO L225 Difference]: With dead ends: 357 [2020-09-25 07:32:27,306 INFO L226 Difference]: Without dead ends: 262 [2020-09-25 07:32:27,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:32:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-25 07:32:27,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 229. [2020-09-25 07:32:27,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 07:32:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 244 transitions. [2020-09-25 07:32:27,361 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 244 transitions. Word has length 154 [2020-09-25 07:32:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:32:27,362 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 244 transitions. [2020-09-25 07:32:27,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:32:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 244 transitions. [2020-09-25 07:32:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 07:32:27,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:32:27,365 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] [2020-09-25 07:32:27,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:32:27,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:32:27,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:32:27,366 INFO L82 PathProgramCache]: Analyzing trace with hash 304341534, now seen corresponding path program 1 times [2020-09-25 07:32:27,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:32:27,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553638027] [2020-09-25 07:32:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:32:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:30,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:30,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 07:32:30,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:32:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2970 [2020-09-25 07:32:30,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:30,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 07:32:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:32:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:30,731 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:32:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:32:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:30,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:30,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:30,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:32:30,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:30,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 07:32:30,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:30,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:30,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:30,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:32:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:30,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:30,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:30,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:32:30,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:30,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:30,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:32:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:30,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:30,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:30,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:30,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:30,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:32:30,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:30,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:30,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:30,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:30,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:30,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:30,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:32:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:30,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:30,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:30,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:30,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:30,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:30,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:32:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:30,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:30,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:30,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:30,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:32:30,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:30,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:30,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:30,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 07:32:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:30,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:30,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:30,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:32:30,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:30,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:30,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:30,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:32:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 07:32:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:30,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:30,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:30,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:30,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:30,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:30,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:30,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 07:32:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:30,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:30,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:30,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:30,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:30,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:30,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:30,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:30,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:30,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-25 07:32:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:30,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:30,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:30,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:30,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:30,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:30,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:30,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:30,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:30,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:30,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:30,962 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 07:32:30,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553638027] [2020-09-25 07:32:30,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:32:30,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:32:30,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299173549] [2020-09-25 07:32:30,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:32:30,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:32:30,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:32:30,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:32:30,965 INFO L87 Difference]: Start difference. First operand 229 states and 244 transitions. Second operand 5 states. [2020-09-25 07:32:31,504 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 07:32:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:32:32,447 INFO L93 Difference]: Finished difference Result 403 states and 460 transitions. [2020-09-25 07:32:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:32:32,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 07:32:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:32:32,452 INFO L225 Difference]: With dead ends: 403 [2020-09-25 07:32:32,452 INFO L226 Difference]: Without dead ends: 284 [2020-09-25 07:32:32,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:32:32,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-25 07:32:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 229. [2020-09-25 07:32:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 07:32:32,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 243 transitions. [2020-09-25 07:32:32,506 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 243 transitions. Word has length 167 [2020-09-25 07:32:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:32:32,508 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 243 transitions. [2020-09-25 07:32:32,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:32:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 243 transitions. [2020-09-25 07:32:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 07:32:32,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:32:32,511 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] [2020-09-25 07:32:32,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:32:32,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:32:32,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:32:32,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1214766301, now seen corresponding path program 1 times [2020-09-25 07:32:32,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:32:32,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995270100] [2020-09-25 07:32:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:32:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:32,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:34,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:34,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 07:32:34,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1755 [2020-09-25 07:32:34,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:34,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:32:34,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 07:32:34,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 07:32:34,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:34,648 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:32:34,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:32:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:34,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:34,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:32:34,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:34,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 07:32:34,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:34,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:32:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:34,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:32:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:34,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:34,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:34,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:34,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:34,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:34,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:34,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:32:34,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:34,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:32:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:34,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:34,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:34,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:34,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:34,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:34,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:34,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:32:34,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:34,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:32:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:34,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:34,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:34,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:34,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:32:34,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:34,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:34,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:34,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:32:34,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:32:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:34,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:34,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:34,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:34,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:32:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:35,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 07:32:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:35,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:35,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:32:35,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:35,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:35,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:35,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:32:35,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:35,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 07:32:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:35,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:35,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:35,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:32:35,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:32:35,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:35,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:32:35,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:35,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:32:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:35,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:35,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:35,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:32:35,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:35,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:32:35,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:35,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:35,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:35,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:35,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-25 07:32:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:35,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:35,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:35,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:35,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:32:35,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:35,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:32:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:32:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:35,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-25 07:32:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:35,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:35,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:35,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:35,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:35,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:32:35,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:35,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:35,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:32:35,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:32:35,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:32:35,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:35,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-25 07:32:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:32:35,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:32:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:32:35,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:32:35,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:32:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:32:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:32:35,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:32:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:32:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:32:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:32:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:32:35,146 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 07:32:35,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995270100] [2020-09-25 07:32:35,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:32:35,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 07:32:35,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864627271] [2020-09-25 07:32:35,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:32:35,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:32:35,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:32:35,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:32:35,149 INFO L87 Difference]: Start difference. First operand 229 states and 243 transitions. Second operand 10 states. [2020-09-25 07:32:35,928 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 07:32:37,624 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 07:32:37,973 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:32:38,333 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 07:32:38,634 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 07:32:38,944 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:32:39,332 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 07:32:39,661 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 07:32:40,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:32:40,700 INFO L93 Difference]: Finished difference Result 625 states and 767 transitions. [2020-09-25 07:32:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 07:32:40,701 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 175 [2020-09-25 07:32:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:32:40,707 INFO L225 Difference]: With dead ends: 625 [2020-09-25 07:32:40,708 INFO L226 Difference]: Without dead ends: 506 [2020-09-25 07:32:40,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-09-25 07:32:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-09-25 07:32:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 340. [2020-09-25 07:32:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-09-25 07:32:40,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 371 transitions. [2020-09-25 07:32:40,794 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 371 transitions. Word has length 175 [2020-09-25 07:32:40,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:32:40,795 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 371 transitions. [2020-09-25 07:32:40,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:32:40,795 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 371 transitions. [2020-09-25 07:32:40,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 07:32:40,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:32:40,798 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] [2020-09-25 07:32:40,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:32:40,798 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:32:40,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:32:40,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1778118102, now seen corresponding path program 1 times [2020-09-25 07:32:40,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:32:40,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71191588] [2020-09-25 07:32:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:32:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:32:40,863 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:32:40,863 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:32:40,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:32:40,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:32:40 BoogieIcfgContainer [2020-09-25 07:32:40,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:32:40,898 INFO L168 Benchmark]: Toolchain (without parser) took 31194.73 ms. Allocated memory was 114.3 MB in the beginning and 523.2 MB in the end (delta: 408.9 MB). Free memory was 71.5 MB in the beginning and 213.4 MB in the end (delta: -141.9 MB). Peak memory consumption was 267.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:32:40,899 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 114.3 MB. Free memory was 89.8 MB in the beginning and 89.7 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-25 07:32:40,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.96 ms. Allocated memory was 114.3 MB in the beginning and 165.7 MB in the end (delta: 51.4 MB). Free memory was 70.9 MB in the beginning and 141.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:32:40,901 INFO L168 Benchmark]: Boogie Preprocessor took 112.03 ms. Allocated memory is still 165.7 MB. Free memory was 141.8 MB in the beginning and 137.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-25 07:32:40,902 INFO L168 Benchmark]: RCFGBuilder took 1357.06 ms. Allocated memory was 165.7 MB in the beginning and 185.1 MB in the end (delta: 19.4 MB). Free memory was 137.6 MB in the beginning and 107.1 MB in the end (delta: 30.5 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2020-09-25 07:32:40,903 INFO L168 Benchmark]: TraceAbstraction took 28927.07 ms. Allocated memory was 185.1 MB in the beginning and 523.2 MB in the end (delta: 338.2 MB). Free memory was 107.1 MB in the beginning and 213.4 MB in the end (delta: -106.3 MB). Peak memory consumption was 231.8 MB. Max. memory is 7.1 GB. [2020-09-25 07:32:40,907 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 114.3 MB. Free memory was 89.8 MB in the beginning and 89.7 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 783.96 ms. Allocated memory was 114.3 MB in the beginning and 165.7 MB in the end (delta: 51.4 MB). Free memory was 70.9 MB in the beginning and 141.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.03 ms. Allocated memory is still 165.7 MB. Free memory was 141.8 MB in the beginning and 137.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1357.06 ms. Allocated memory was 165.7 MB in the beginning and 185.1 MB in the end (delta: 19.4 MB). Free memory was 137.6 MB in the beginning and 107.1 MB in the end (delta: 30.5 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28927.07 ms. Allocated memory was 185.1 MB in the beginning and 523.2 MB in the end (delta: 338.2 MB). Free memory was 107.1 MB in the beginning and 213.4 MB in the end (delta: -106.3 MB). Peak memory consumption was 231.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 910]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L149] int waterLevel = 1; [L150] int methaneLevelCritical = 0; [L407] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L608] int pumpRunning = 0; [L609] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L862] int retValue_acc ; [L865] retValue_acc = 1 [L866] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L770] int splverifierCounter ; [L771] int tmp ; [L772] int tmp___0 ; [L773] int tmp___1 ; [L774] int tmp___2 ; [L777] splverifierCounter = 0 [L779] COND TRUE 1 [L781] COND TRUE splverifierCounter < 4 [L787] tmp = __VERIFIER_nondet_int() [L789] COND TRUE \read(tmp) [L791] CALL waterRise() [L167] COND TRUE waterLevel < 2 [L168] waterLevel = waterLevel + 1 [L791] RET waterRise() [L797] tmp___0 = __VERIFIER_nondet_int() [L799] COND FALSE !(\read(tmp___0)) [L807] tmp___2 = __VERIFIER_nondet_int() [L809] COND TRUE \read(tmp___2) [L811] CALL startSystem() [L764] systemActive = 1 [L811] RET startSystem() [L824] CALL timeShift() [L616] COND FALSE !(\read(pumpRunning)) [L623] COND TRUE \read(systemActive) [L625] CALL processEnvironment() [L645] int tmp ; [L648] COND FALSE !(\read(pumpRunning)) [L663] FCALL processEnvironment__wrappee__base() [L625] RET processEnvironment() [L631] CALL __utac_acc__Specification3_spec__1() [L873] int tmp ; [L874] int tmp___0 ; [L875] int tmp___1 ; [L879] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L879] RET, EXPR isMethaneLevelCritical() [L879] tmp = isMethaneLevelCritical() [L881] COND FALSE !(\read(tmp)) [L885] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L885] RET, EXPR getWaterLevel() [L885] tmp___0 = getWaterLevel() [L887] COND TRUE tmp___0 == 2 [L889] CALL, EXPR isPumpRunning() [L697] int retValue_acc ; [L700] retValue_acc = pumpRunning [L701] return (retValue_acc); [L889] RET, EXPR isPumpRunning() [L889] tmp___1 = isPumpRunning() [L891] COND FALSE !(\read(tmp___1)) [L895] CALL __automaton_fail() [L910] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 613 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 879 SDtfs, 1239 SDslu, 795 SDs, 0 SdLazy, 1902 SolverSat, 387 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 294 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 829 NumberOfCodeBlocks, 829 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 645 ConstructedInterpolants, 0 QuantifiedInterpolants, 246908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...