/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=NARROWEST --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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:50:03,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:50:03,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:50:03,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:50:03,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:50:03,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:50:03,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:50:03,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:50:03,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:50:03,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:50:03,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:50:03,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:50:03,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:50:03,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:50:03,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:50:03,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:50:03,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:50:03,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:50:03,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:50:03,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:50:03,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:50:03,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:50:03,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:50:03,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:50:03,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:50:03,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:50:03,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:50:03,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:50:03,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:50:03,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:50:03,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:50:03,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:50:03,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:50:03,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:50:03,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:50:03,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:50:03,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:50:03,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:50:03,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:50:03,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:50:03,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:50:03,498 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 01:50:03,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:50:03,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:50:03,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:50:03,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:50:03,533 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:50:03,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:50:03,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:50:03,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:50:03,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:50:03,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:50:03,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:50:03,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:50:03,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:50:03,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:50:03,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:50:03,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:50:03,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:50:03,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:50:03,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:50:03,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:50:03,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:50:03,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:50:03,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:50:03,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:50:03,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:50:03,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:50:03,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:50:03,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:50:03,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:50:03,542 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 01:50:04,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:50:04,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:50:04,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:50:04,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:50:04,066 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:50:04,067 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2020-09-25 01:50:04,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87dbcd74a/56f722b0ad0247c1b87dfbf3fab82430/FLAG77f7be67b [2020-09-25 01:50:04,811 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:50:04,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2020-09-25 01:50:04,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87dbcd74a/56f722b0ad0247c1b87dfbf3fab82430/FLAG77f7be67b [2020-09-25 01:50:05,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87dbcd74a/56f722b0ad0247c1b87dfbf3fab82430 [2020-09-25 01:50:05,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:50:05,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:50:05,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:50:05,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:50:05,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:50:05,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:50:05" (1/1) ... [2020-09-25 01:50:05,116 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 01:50:05, skipping insertion in model container [2020-09-25 01:50:05,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:50:05" (1/1) ... [2020-09-25 01:50:05,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:50:05,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:50:05,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:50:05,632 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:50:05,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:50:05,854 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:50:05,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:05 WrapperNode [2020-09-25 01:50:05,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:50:05,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:50:05,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:50:05,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:50:05,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:05" (1/1) ... [2020-09-25 01:50:05,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:05" (1/1) ... [2020-09-25 01:50:05,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:05" (1/1) ... [2020-09-25 01:50:05,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:05" (1/1) ... [2020-09-25 01:50:05,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:05" (1/1) ... [2020-09-25 01:50:05,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:05" (1/1) ... [2020-09-25 01:50:05,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:05" (1/1) ... [2020-09-25 01:50:05,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:50:05,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:50:05,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:50:05,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:50:05,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:50:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:50:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:50:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:50:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 01:50:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:50:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:50:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:50:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:50:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:50:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:50:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:50:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:50:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:50:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:50:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:50:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:50:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:50:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 01:50:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:50:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:50:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:50:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:50:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:50:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:50:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:50:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:50:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:50:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:50:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:50:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:50:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 01:50:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:50:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:50:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:50:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:50:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:50:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 01:50:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:50:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:50:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:50:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:50:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:50:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:50:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:50:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:50:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 01:50:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:50:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:50:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:50:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:50:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:50:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:50:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:50:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:50:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:50:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:50:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:50:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:50:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:50:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:50:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:50:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:50:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:50:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:50:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:50:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:50:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:50:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 01:50:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:50:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:50:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:50:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:50:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:50:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:50:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:50:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:50:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:50:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:50:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:50:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:50:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:50:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:50:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:50:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:50:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 01:50:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 01:50:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:50:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:50:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:50:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:50:07,261 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:50:07,262 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:50:07,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:50:07 BoogieIcfgContainer [2020-09-25 01:50:07,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:50:07,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:50:07,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:50:07,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:50:07,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:50:05" (1/3) ... [2020-09-25 01:50:07,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5e19f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:50:07, skipping insertion in model container [2020-09-25 01:50:07,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:05" (2/3) ... [2020-09-25 01:50:07,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5e19f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:50:07, skipping insertion in model container [2020-09-25 01:50:07,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:50:07" (3/3) ... [2020-09-25 01:50:07,288 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c [2020-09-25 01:50:07,302 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:50:07,317 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:50:07,344 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:50:07,393 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:50:07,394 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:50:07,394 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:50:07,394 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:50:07,394 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:50:07,394 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:50:07,395 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:50:07,395 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:50:07,439 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-09-25 01:50:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 01:50:07,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:07,459 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 01:50:07,460 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:07,468 INFO L82 PathProgramCache]: Analyzing trace with hash 984796511, now seen corresponding path program 1 times [2020-09-25 01:50:07,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:07,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391422087] [2020-09-25 01:50:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:08,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:08,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:12,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:12,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 01:50:12,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:50:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4250 [2020-09-25 01:50:12,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:50:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:50:12,567 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:12,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:12,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:12,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:12,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:12,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:12,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 01:50:12,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:12,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:12,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:12,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:12,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:12,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:12,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:12,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:12,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:12,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:12,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:12,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:12,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:12,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:12,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:12,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:12,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:12,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:12,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:12,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:12,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:12,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:12,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:12,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:12,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:50:12,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:12,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:12,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:12,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:12,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:12,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:12,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:12,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:12,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:12,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:12,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:12,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:50:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:12,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:12,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:12,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:12,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:12,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:12,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:12,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:50:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:12,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:12,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:12,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:12,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:12,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:12,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:12,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 01:50:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:12,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:12,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:12,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:12,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:12,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:12,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:12,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:12,882 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 01:50:12,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391422087] [2020-09-25 01:50:12,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:12,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:50:12,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143699269] [2020-09-25 01:50:12,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:50:12,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:12,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:50:12,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:50:12,916 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 3 states. [2020-09-25 01:50:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:14,056 INFO L93 Difference]: Finished difference Result 435 states and 517 transitions. [2020-09-25 01:50:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:50:14,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 01:50:14,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:14,081 INFO L225 Difference]: With dead ends: 435 [2020-09-25 01:50:14,081 INFO L226 Difference]: Without dead ends: 274 [2020-09-25 01:50:14,087 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 01:50:14,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-25 01:50:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 235. [2020-09-25 01:50:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-25 01:50:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2020-09-25 01:50:14,207 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 153 [2020-09-25 01:50:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:14,211 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2020-09-25 01:50:14,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:50:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2020-09-25 01:50:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 01:50:14,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:14,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:50:14,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:50:14,218 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:14,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:14,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1074714265, now seen corresponding path program 1 times [2020-09-25 01:50:14,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:14,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784339734] [2020-09-25 01:50:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:19,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:19,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:50:19,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:50:19,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 01:50:19,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:19,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:50:19,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:50:19,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:19,578 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:19,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:19,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:19,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:19,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:19,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 01:50:19,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:19,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:19,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:19,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:19,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:19,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:19,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:19,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:19,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:19,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:19,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:19,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:19,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:50:19,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:19,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:19,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:19,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:19,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:19,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:50:19,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:19,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:19,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:19,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:19,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:19,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:19,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:19,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:19,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:19,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:19,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 01:50:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:19,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:19,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:19,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:19,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:19,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 01:50:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:19,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:19,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:19,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:19,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:19,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 01:50:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:19,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:19,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:19,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:19,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:19,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:19,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:19,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:19,855 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 01:50:19,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784339734] [2020-09-25 01:50:19,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:19,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:50:19,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775129139] [2020-09-25 01:50:19,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:50:19,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:19,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:50:19,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:50:19,860 INFO L87 Difference]: Start difference. First operand 235 states and 253 transitions. Second operand 4 states. [2020-09-25 01:50:20,547 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:50:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:21,415 INFO L93 Difference]: Finished difference Result 352 states and 392 transitions. [2020-09-25 01:50:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:50:21,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 01:50:21,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:21,422 INFO L225 Difference]: With dead ends: 352 [2020-09-25 01:50:21,423 INFO L226 Difference]: Without dead ends: 257 [2020-09-25 01:50:21,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:50:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-25 01:50:21,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 225. [2020-09-25 01:50:21,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-25 01:50:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 240 transitions. [2020-09-25 01:50:21,500 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 240 transitions. Word has length 154 [2020-09-25 01:50:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:21,502 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 240 transitions. [2020-09-25 01:50:21,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:50:21,503 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 240 transitions. [2020-09-25 01:50:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 01:50:21,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:21,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:50:21,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:50:21,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:21,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1460051564, now seen corresponding path program 1 times [2020-09-25 01:50:21,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:21,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122622951] [2020-09-25 01:50:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:21,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:24,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:24,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 01:50:24,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:50:24,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3131 [2020-09-25 01:50:24,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 01:50:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 01:50:24,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:25,011 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:25,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:25,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:25,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:25,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 01:50:25,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 01:50:25,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:25,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:25,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:25,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:25,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:25,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:25,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:50:25,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:25,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:25,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:25,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:25,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:25,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:25,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:50:25,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:25,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:25,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:25,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:25,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:25,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:50:25,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:50:25,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:25,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:25,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:25,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:25,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:25,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:50:25,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:50:25,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:25,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:50:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:25,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:25,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:25,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:25,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:25,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:25,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:25,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:25,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 01:50:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:25,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:25,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:25,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:50:25,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:25,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-25 01:50:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:25,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:25,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:25,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:25,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:50:25,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122622951] [2020-09-25 01:50:25,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:25,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:50:25,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606330519] [2020-09-25 01:50:25,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:50:25,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:50:25,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:50:25,517 INFO L87 Difference]: Start difference. First operand 225 states and 240 transitions. Second operand 4 states. [2020-09-25 01:50:26,076 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:50:26,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:26,873 INFO L93 Difference]: Finished difference Result 372 states and 417 transitions. [2020-09-25 01:50:26,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:50:26,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 01:50:26,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:26,881 INFO L225 Difference]: With dead ends: 372 [2020-09-25 01:50:26,881 INFO L226 Difference]: Without dead ends: 257 [2020-09-25 01:50:26,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:50:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-25 01:50:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 225. [2020-09-25 01:50:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-25 01:50:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 239 transitions. [2020-09-25 01:50:26,956 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 239 transitions. Word has length 163 [2020-09-25 01:50:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:26,958 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 239 transitions. [2020-09-25 01:50:26,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:50:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 239 transitions. [2020-09-25 01:50:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 01:50:26,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:26,960 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 01:50:26,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:50:26,961 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:26,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:26,961 INFO L82 PathProgramCache]: Analyzing trace with hash 973971077, now seen corresponding path program 1 times [2020-09-25 01:50:26,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:26,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061010648] [2020-09-25 01:50:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:27,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 01:50:28,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:28,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-09-25 01:50:28,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 01:50:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 01:50:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 01:50:28,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,189 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:29,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:29,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:29,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:29,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:29,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 01:50:29,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 01:50:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:29,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:29,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:29,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:29,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:29,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:29,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:29,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:29,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:50:29,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:29,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:29,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:29,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:29,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:50:29,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:29,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:29,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:29,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:29,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:29,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:50:29,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:50:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:29,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:29,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:29,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:29,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:29,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:29,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:50:29,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 01:50:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:29,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:29,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:29,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 01:50:29,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:29,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:29,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:29,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:29,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:29,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 01:50:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:50:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:29,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:29,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:29,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:50:29,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:50:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:29,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:29,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:29,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:29,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:29,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:50:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 01:50:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:29,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:29,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:29,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:50:29,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:50:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:50:29,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-25 01:50:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:29,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:29,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:29,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:29,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:29,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:29,670 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 01:50:29,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061010648] [2020-09-25 01:50:29,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:29,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:50:29,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804414293] [2020-09-25 01:50:29,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:50:29,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:29,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:50:29,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:50:29,673 INFO L87 Difference]: Start difference. First operand 225 states and 239 transitions. Second operand 9 states. [2020-09-25 01:50:30,190 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:50:31,772 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:50:32,391 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-25 01:50:32,795 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:50:33,162 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:50:33,499 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:50:33,861 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:50:34,166 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:50:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:34,853 INFO L93 Difference]: Finished difference Result 522 states and 613 transitions. [2020-09-25 01:50:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 01:50:34,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 01:50:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:34,858 INFO L225 Difference]: With dead ends: 522 [2020-09-25 01:50:34,858 INFO L226 Difference]: Without dead ends: 407 [2020-09-25 01:50:34,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 01:50:34,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-09-25 01:50:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 332. [2020-09-25 01:50:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-09-25 01:50:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 363 transitions. [2020-09-25 01:50:34,909 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 363 transitions. Word has length 171 [2020-09-25 01:50:34,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:34,910 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 363 transitions. [2020-09-25 01:50:34,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:50:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 363 transitions. [2020-09-25 01:50:34,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 01:50:34,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:34,913 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 01:50:34,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:50:34,914 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1373722854, now seen corresponding path program 1 times [2020-09-25 01:50:34,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:34,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466234191] [2020-09-25 01:50:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:50:34,980 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:50:34,980 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:50:34,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:50:35,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:50:35 BoogieIcfgContainer [2020-09-25 01:50:35,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:50:35,015 INFO L168 Benchmark]: Toolchain (without parser) took 29914.91 ms. Allocated memory was 140.5 MB in the beginning and 602.4 MB in the end (delta: 461.9 MB). Free memory was 101.4 MB in the beginning and 243.4 MB in the end (delta: -141.9 MB). Peak memory consumption was 320.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:50:35,016 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:50:35,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.92 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 174.1 MB in the end (delta: -73.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:50:35,018 INFO L168 Benchmark]: Boogie Preprocessor took 99.99 ms. Allocated memory is still 203.9 MB. Free memory was 174.1 MB in the beginning and 170.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:50:35,019 INFO L168 Benchmark]: RCFGBuilder took 1318.87 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 169.5 MB in the beginning and 179.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:50:35,020 INFO L168 Benchmark]: TraceAbstraction took 27736.90 ms. Allocated memory was 237.0 MB in the beginning and 602.4 MB in the end (delta: 365.4 MB). Free memory was 179.0 MB in the beginning and 243.4 MB in the end (delta: -64.4 MB). Peak memory consumption was 301.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:50:35,024 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.92 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 174.1 MB in the end (delta: -73.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.99 ms. Allocated memory is still 203.9 MB. Free memory was 174.1 MB in the beginning and 170.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1318.87 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 169.5 MB in the beginning and 179.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27736.90 ms. Allocated memory was 237.0 MB in the beginning and 602.4 MB in the end (delta: 365.4 MB). Free memory was 179.0 MB in the beginning and 243.4 MB in the end (delta: -64.4 MB). Peak memory consumption was 301.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L256] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L458] int waterLevel = 1; [L459] int methaneLevelCritical = 0; [L585] int cleanupTimeShifts = 4; [L686] int pumpRunning = 0; [L687] int systemActive = 1; [L661] int retValue_acc ; [L662] int tmp ; [L666] FCALL select_helpers() [L667] FCALL select_features() [L668] CALL, EXPR valid_product() [L576] int retValue_acc ; [L579] retValue_acc = 1 [L580] return (retValue_acc); [L668] RET, EXPR valid_product() [L668] tmp = valid_product() [L670] COND TRUE \read(tmp) [L672] FCALL setup() [L673] CALL runTest() [L655] CALL test() [L857] int splverifierCounter ; [L858] int tmp ; [L859] int tmp___0 ; [L860] int tmp___1 ; [L861] int tmp___2 ; [L864] splverifierCounter = 0 [L866] COND TRUE 1 [L868] COND TRUE splverifierCounter < 4 [L874] tmp = __VERIFIER_nondet_int() [L876] COND TRUE \read(tmp) [L878] CALL waterRise() [L476] COND TRUE waterLevel < 2 [L477] waterLevel = waterLevel + 1 [L878] RET waterRise() [L884] tmp___0 = __VERIFIER_nondet_int() [L886] COND FALSE !(\read(tmp___0)) [L894] tmp___2 = __VERIFIER_nondet_int() [L896] COND TRUE \read(tmp___2) [L909] CALL timeShift() [L693] COND FALSE !(\read(pumpRunning)) [L700] COND TRUE \read(systemActive) [L702] CALL processEnvironment() [L722] int tmp ; [L725] COND FALSE !(\read(pumpRunning)) [L740] FCALL processEnvironment__wrappee__base() [L702] RET processEnvironment() [L708] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L497] int retValue_acc ; [L500] retValue_acc = methaneLevelCritical [L501] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L529] int retValue_acc ; [L532] retValue_acc = waterLevel [L533] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L792] int retValue_acc ; [L795] retValue_acc = pumpRunning [L796] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 862 SDtfs, 886 SDslu, 751 SDs, 0 SdLazy, 1659 SolverSat, 255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred 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: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 178 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 17.0s InterpolantComputationTime, 817 NumberOfCodeBlocks, 817 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 637 ConstructedInterpolants, 0 QuantifiedInterpolants, 253252 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...