/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=1.0 --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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:41:14,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:41:14,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:41:14,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:41:14,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:41:14,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:41:14,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:41:14,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:41:14,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:41:14,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:41:14,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:41:14,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:41:14,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:41:14,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:41:14,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:41:14,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:41:14,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:41:14,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:41:14,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:41:14,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:41:14,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:41:14,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:41:14,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:41:14,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:41:14,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:41:14,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:41:14,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:41:14,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:41:14,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:41:14,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:41:14,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:41:14,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:41:14,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:41:14,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:41:14,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:41:14,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:41:14,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:41:14,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:41:14,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:41:14,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:41:14,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:41:14,539 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 08:41:14,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:41:14,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:41:14,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:41:14,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:41:14,592 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:41:14,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:41:14,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:41:14,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:41:14,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:41:14,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:41:14,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:41:14,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:41:14,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:41:14,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:41:14,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:41:14,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:41:14,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:41:14,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:41:14,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:41:14,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:41:14,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:41:14,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:41:14,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:41:14,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:41:14,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:41:14,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:41:14,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:41:14,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:41:14,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:41:14,600 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:41:15,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:41:15,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:41:15,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:41:15,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:41:15,101 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:41:15,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-09-25 08:41:15,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3187f232d/feb38ef57aa144588ed9e7b92efffbc9/FLAG3937efe37 [2020-09-25 08:41:15,852 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:41:15,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-09-25 08:41:15,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3187f232d/feb38ef57aa144588ed9e7b92efffbc9/FLAG3937efe37 [2020-09-25 08:41:16,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3187f232d/feb38ef57aa144588ed9e7b92efffbc9 [2020-09-25 08:41:16,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:41:16,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:41:16,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:41:16,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:41:16,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:41:16,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16, skipping insertion in model container [2020-09-25 08:41:16,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:41:16,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:41:16,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:41:16,670 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:41:16,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:41:16,820 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:41:16,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16 WrapperNode [2020-09-25 08:41:16,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:41:16,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:41:16,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:41:16,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:41:16,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:41:16,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:41:16,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:41:16,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:41:16,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16" (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 08:41:17,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:41:17,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:41:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 08:41:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 08:41:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 08:41:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 08:41:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 08:41:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 08:41:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 08:41:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 08:41:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 08:41:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 08:41:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 08:41:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 08:41:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 08:41:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 08:41:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 08:41:17,039 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 08:41:17,039 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 08:41:17,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 08:41:17,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 08:41:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 08:41:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 08:41:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 08:41:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 08:41:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 08:41:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 08:41:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 08:41:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 08:41:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 08:41:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 08:41:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:41:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 08:41:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 08:41:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 08:41:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 08:41:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:41:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:41:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:41:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 08:41:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 08:41:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:41:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:41:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 08:41:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:41:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:41:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:41:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:41:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 08:41:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:41:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 08:41:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 08:41:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:41:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 08:41:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 08:41:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:41:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 08:41:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 08:41:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 08:41:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 08:41:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 08:41:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 08:41:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 08:41:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 08:41:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 08:41:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 08:41:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 08:41:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 08:41:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 08:41:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 08:41:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 08:41:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 08:41:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:41:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 08:41:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 08:41:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 08:41:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 08:41:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 08:41:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 08:41:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 08:41:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 08:41:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 08:41:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 08:41:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:41:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 08:41:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:41:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 08:41:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:41:18,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:41:18,216 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 08:41:18,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:41:18 BoogieIcfgContainer [2020-09-25 08:41:18,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:41:18,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:41:18,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:41:18,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:41:18,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:41:16" (1/3) ... [2020-09-25 08:41:18,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436065d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:41:18, skipping insertion in model container [2020-09-25 08:41:18,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16" (2/3) ... [2020-09-25 08:41:18,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436065d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:41:18, skipping insertion in model container [2020-09-25 08:41:18,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:41:18" (3/3) ... [2020-09-25 08:41:18,233 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c [2020-09-25 08:41:18,244 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:41:18,257 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:41:18,276 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:41:18,306 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:41:18,306 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:41:18,306 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:41:18,306 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:41:18,307 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:41:18,307 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:41:18,307 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:41:18,307 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:41:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-09-25 08:41:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 08:41:18,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:18,358 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 08:41:18,358 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1231247222, now seen corresponding path program 1 times [2020-09-25 08:41:18,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:18,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161497487] [2020-09-25 08:41:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:23,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:23,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 08:41:23,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:41:23,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4707 [2020-09-25 08:41:23,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:23,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 08:41:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 08:41:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:41:23,966 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:23,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:24,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-25 08:41:24,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:24,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:24,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 08:41:24,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:24,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:41:24,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:24,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:41:24,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:24,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:24,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:24,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:24,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:41:24,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:24,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:24,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:41:24,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:24,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:24,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:24,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:41:24,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 08:41:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:24,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:24,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:24,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:24,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:24,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 08:41:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:24,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:24,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 08:41:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:24,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:24,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,572 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 08:41:24,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161497487] [2020-09-25 08:41:24,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:24,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:41:24,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658591929] [2020-09-25 08:41:24,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:41:24,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:24,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:41:24,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:41:24,614 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-09-25 08:41:25,335 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:41:26,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:26,371 INFO L93 Difference]: Finished difference Result 435 states and 517 transitions. [2020-09-25 08:41:26,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:41:26,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-09-25 08:41:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:26,395 INFO L225 Difference]: With dead ends: 435 [2020-09-25 08:41:26,395 INFO L226 Difference]: Without dead ends: 274 [2020-09-25 08:41:26,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:41:26,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-25 08:41:26,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 235. [2020-09-25 08:41:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-25 08:41:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 252 transitions. [2020-09-25 08:41:26,530 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 252 transitions. Word has length 153 [2020-09-25 08:41:26,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:26,534 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 252 transitions. [2020-09-25 08:41:26,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:41:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 252 transitions. [2020-09-25 08:41:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 08:41:26,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:26,548 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] [2020-09-25 08:41:26,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:41:26,550 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:26,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:26,550 INFO L82 PathProgramCache]: Analyzing trace with hash -23414697, now seen corresponding path program 1 times [2020-09-25 08:41:26,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:26,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675979411] [2020-09-25 08:41:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:29,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:29,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 08:41:29,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:41:29,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3176 [2020-09-25 08:41:29,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:29,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 08:41:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 08:41:29,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,084 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:30,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:30,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 08:41:30,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:30,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:30,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:30,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:30,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:30,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:30,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:30,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:30,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:30,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:30,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:30,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 08:41:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:41:30,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:30,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:30,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:41:30,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:30,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:41:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:30,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:41:30,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:30,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:30,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 08:41:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:30,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:30,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:30,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-25 08:41:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:30,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:30,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:30,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-25 08:41:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:30,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:30,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:30,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:30,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:30,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:30,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:41:30,323 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 08:41:30,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675979411] [2020-09-25 08:41:30,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:30,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:41:30,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875016098] [2020-09-25 08:41:30,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:41:30,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:30,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:41:30,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:41:30,327 INFO L87 Difference]: Start difference. First operand 235 states and 252 transitions. Second operand 5 states. [2020-09-25 08:41:30,963 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:41:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:31,950 INFO L93 Difference]: Finished difference Result 376 states and 426 transitions. [2020-09-25 08:41:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:41:31,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 08:41:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:31,958 INFO L225 Difference]: With dead ends: 376 [2020-09-25 08:41:31,959 INFO L226 Difference]: Without dead ends: 281 [2020-09-25 08:41:31,962 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 08:41:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-25 08:41:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 225. [2020-09-25 08:41:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-25 08:41:32,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 239 transitions. [2020-09-25 08:41:32,039 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 239 transitions. Word has length 162 [2020-09-25 08:41:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:32,041 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 239 transitions. [2020-09-25 08:41:32,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:41:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 239 transitions. [2020-09-25 08:41:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 08:41:32,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:32,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:41:32,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:41:32,044 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:32,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:32,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1060139161, now seen corresponding path program 1 times [2020-09-25 08:41:32,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:32,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658044540] [2020-09-25 08:41:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:32,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:34,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 08:41:34,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:34,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1921 [2020-09-25 08:41:34,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:34,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:41:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 08:41:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 08:41:34,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:41:34,455 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:34,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:34,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:34,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-25 08:41:34,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:34,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 08:41:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:34,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:34,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:34,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:34,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:34,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:34,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:34,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:34,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:34,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:41:34,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:34,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:34,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:34,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:34,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:34,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:34,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:41:34,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:34,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:34,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:34,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:34,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:34,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:34,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:34,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:34,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 08:41:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:34,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:34,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:41:34,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:34,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:34,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:34,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:41:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:41:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:34,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:34,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:34,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:41:34,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:34,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:34,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:34,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 08:41:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:34,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:34,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:34,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:41:34,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:34,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:34,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:34,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 08:41:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:34,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:34,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:34,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:34,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:41:34,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:34,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:41:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:34,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:35,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-25 08:41:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:35,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:35,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:35,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:35,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:35,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:35,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:35,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:35,066 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 08:41:35,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658044540] [2020-09-25 08:41:35,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:35,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 08:41:35,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376162750] [2020-09-25 08:41:35,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:41:35,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:35,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:41:35,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:41:35,072 INFO L87 Difference]: Start difference. First operand 225 states and 239 transitions. Second operand 9 states. [2020-09-25 08:41:35,670 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:41:36,944 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 08:41:38,092 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-25 08:41:38,694 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-25 08:41:39,080 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:41:39,426 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:41:39,734 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:41:40,099 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:41:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:40,783 INFO L93 Difference]: Finished difference Result 526 states and 615 transitions. [2020-09-25 08:41:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:41:40,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 08:41:40,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:40,791 INFO L225 Difference]: With dead ends: 526 [2020-09-25 08:41:40,791 INFO L226 Difference]: Without dead ends: 411 [2020-09-25 08:41:40,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:41:40,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-09-25 08:41:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 336. [2020-09-25 08:41:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-09-25 08:41:40,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 365 transitions. [2020-09-25 08:41:40,852 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 365 transitions. Word has length 171 [2020-09-25 08:41:40,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:40,853 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 365 transitions. [2020-09-25 08:41:40,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:41:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 365 transitions. [2020-09-25 08:41:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 08:41:40,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:40,856 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] [2020-09-25 08:41:40,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:41:40,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:40,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:40,857 INFO L82 PathProgramCache]: Analyzing trace with hash 558510229, now seen corresponding path program 1 times [2020-09-25 08:41:40,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:40,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739072295] [2020-09-25 08:41:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:41:40,931 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:41:40,931 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:41:40,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:41:40,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:41:40 BoogieIcfgContainer [2020-09-25 08:41:40,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:41:40,967 INFO L168 Benchmark]: Toolchain (without parser) took 24860.83 ms. Allocated memory was 147.8 MB in the beginning and 549.5 MB in the end (delta: 401.6 MB). Free memory was 102.4 MB in the beginning and 141.0 MB in the end (delta: -38.6 MB). Peak memory consumption was 363.0 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:40,968 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:41:40,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.24 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 171.6 MB in the end (delta: -69.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:40,970 INFO L168 Benchmark]: Boogie Preprocessor took 110.59 ms. Allocated memory is still 205.0 MB. Free memory was 171.6 MB in the beginning and 166.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:40,971 INFO L168 Benchmark]: RCFGBuilder took 1290.23 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 166.8 MB in the beginning and 171.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:40,972 INFO L168 Benchmark]: TraceAbstraction took 22740.32 ms. Allocated memory was 234.4 MB in the beginning and 549.5 MB in the end (delta: 315.1 MB). Free memory was 171.7 MB in the beginning and 141.0 MB in the end (delta: 30.7 MB). Peak memory consumption was 345.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:40,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.24 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 171.6 MB in the end (delta: -69.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.59 ms. Allocated memory is still 205.0 MB. Free memory was 171.6 MB in the beginning and 166.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1290.23 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 166.8 MB in the beginning and 171.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22740.32 ms. Allocated memory was 234.4 MB in the beginning and 549.5 MB in the end (delta: 315.1 MB). Free memory was 171.7 MB in the beginning and 141.0 MB in the end (delta: 30.7 MB). Peak memory consumption was 345.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L582] int pumpRunning = 0; [L583] int systemActive = 1; [L735] int cleanupTimeShifts = 4; [L811] int retValue_acc ; [L812] int tmp ; [L816] FCALL select_helpers() [L817] FCALL select_features() [L818] CALL, EXPR valid_product() [L860] int retValue_acc ; [L863] retValue_acc = 1 [L864] return (retValue_acc); [L818] RET, EXPR valid_product() [L818] tmp = valid_product() [L820] COND TRUE \read(tmp) [L822] FCALL setup() [L823] CALL runTest() [L802] CALL test() [L514] int splverifierCounter ; [L515] int tmp ; [L516] int tmp___0 ; [L517] int tmp___1 ; [L518] int tmp___2 ; [L521] splverifierCounter = 0 [L523] COND TRUE 1 [L525] COND TRUE splverifierCounter < 4 [L531] tmp = __VERIFIER_nondet_int() [L533] COND TRUE \read(tmp) [L535] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L535] RET waterRise() [L541] tmp___0 = __VERIFIER_nondet_int() [L543] COND FALSE !(\read(tmp___0)) [L551] tmp___2 = __VERIFIER_nondet_int() [L553] COND TRUE \read(tmp___2) [L566] CALL timeShift() [L590] COND FALSE !(\read(pumpRunning)) [L597] COND TRUE \read(systemActive) [L599] CALL processEnvironment() [L619] int tmp ; [L622] COND FALSE !(\read(pumpRunning)) [L637] FCALL processEnvironment__wrappee__base() [L599] RET processEnvironment() [L605] CALL __utac_acc__Specification3_spec__1() [L870] int tmp ; [L871] int tmp___0 ; [L872] int tmp___1 ; [L876] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L876] RET, EXPR isMethaneLevelCritical() [L876] tmp = isMethaneLevelCritical() [L878] COND FALSE !(\read(tmp)) [L882] CALL, EXPR getWaterLevel() [L484] int retValue_acc ; [L487] retValue_acc = waterLevel [L488] return (retValue_acc); [L882] RET, EXPR getWaterLevel() [L882] tmp___0 = getWaterLevel() [L884] COND TRUE tmp___0 == 2 [L886] CALL, EXPR isPumpRunning() [L671] int retValue_acc ; [L674] retValue_acc = pumpRunning [L675] return (retValue_acc); [L886] RET, EXPR isPumpRunning() [L886] tmp___1 = isPumpRunning() [L888] COND FALSE !(\read(tmp___1)) [L892] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 609 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 646 SDtfs, 967 SDslu, 760 SDs, 0 SdLazy, 1530 SolverSat, 260 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 170 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 662 NumberOfCodeBlocks, 662 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 483 ConstructedInterpolants, 0 QuantifiedInterpolants, 199386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...