/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:24:34,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:24:34,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:24:34,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:24:34,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:24:34,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:24:34,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:24:34,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:24:34,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:24:34,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:24:34,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:24:34,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:24:34,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:24:34,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:24:34,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:24:34,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:24:34,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:24:34,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:24:34,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:24:34,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:24:34,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:24:34,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:24:34,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:24:34,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:24:34,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:24:34,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:24:34,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:24:34,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:24:34,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:24:34,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:24:34,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:24:34,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:24:34,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:24:34,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:24:34,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:24:34,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:24:34,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:24:34,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:24:34,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:24:34,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:24:34,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:24:34,530 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 [2020-08-19 03:24:34,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:24:34,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:24:34,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:24:34,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:24:34,576 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:24:34,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:24:34,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:24:34,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:24:34,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:24:34,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:24:34,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:24:34,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:24:34,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:24:34,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:24:34,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:24:34,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:24:34,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:24:34,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:24:34,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:24:34,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:24:34,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:24:34,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:24:34,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:24:34,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:24:34,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:24:34,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:24:34,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:24:34,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:24:34,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:24:34,582 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:24:34,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:24:34,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:24:34,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:24:34,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:24:34,888 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:24:34,889 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2020-08-19 03:24:34,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f645f399/c806efaa35a84448998904099b542564/FLAG218d248a0 [2020-08-19 03:24:35,514 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:24:35,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2020-08-19 03:24:35,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f645f399/c806efaa35a84448998904099b542564/FLAG218d248a0 [2020-08-19 03:24:35,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f645f399/c806efaa35a84448998904099b542564 [2020-08-19 03:24:35,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:24:35,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:24:35,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:24:35,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:24:35,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:24:35,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:24:35" (1/1) ... [2020-08-19 03:24:35,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d3f8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:35, skipping insertion in model container [2020-08-19 03:24:35,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:24:35" (1/1) ... [2020-08-19 03:24:35,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:24:35,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:24:36,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:24:36,365 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:24:36,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:24:36,473 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:24:36,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:36 WrapperNode [2020-08-19 03:24:36,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:24:36,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:24:36,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:24:36,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:24:36,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:36" (1/1) ... [2020-08-19 03:24:36,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:36" (1/1) ... [2020-08-19 03:24:36,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:36" (1/1) ... [2020-08-19 03:24:36,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:36" (1/1) ... [2020-08-19 03:24:36,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:36" (1/1) ... [2020-08-19 03:24:36,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:36" (1/1) ... [2020-08-19 03:24:36,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:36" (1/1) ... [2020-08-19 03:24:36,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:24:36,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:24:36,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:24:36,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:24:36,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:36" (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 [2020-08-19 03:24:36,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:24:36,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:24:36,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:24:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:24:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:24:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:24:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:24:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:24:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:24:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:24:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:24:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:24:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:24:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:24:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:24:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:24:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:24:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:24:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 03:24:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:24:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:24:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:24:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:24:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:24:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:24:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:24:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:24:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:24:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:24:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 03:24:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:24:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:24:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:24:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:24:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:24:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 03:24:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 03:24:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:24:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 03:24:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:24:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:24:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:24:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:24:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:24:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:24:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:24:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:24:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:24:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:24:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:24:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:24:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:24:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:24:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:24:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:24:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:24:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:24:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:24:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:24:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:24:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 03:24:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:24:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:24:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:24:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:24:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:24:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:24:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:24:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:24:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:24:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:24:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:24:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:24:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:24:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:24:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:24:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:24:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:24:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:24:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:24:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:24:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:24:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 03:24:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 03:24:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:24:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:24:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 03:24:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 03:24:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:24:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:24:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:24:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:24:37,693 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:24:37,693 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:24:37,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:24:37 BoogieIcfgContainer [2020-08-19 03:24:37,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:24:37,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:24:37,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:24:37,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:24:37,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:24:35" (1/3) ... [2020-08-19 03:24:37,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca9a0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:24:37, skipping insertion in model container [2020-08-19 03:24:37,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:36" (2/3) ... [2020-08-19 03:24:37,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca9a0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:24:37, skipping insertion in model container [2020-08-19 03:24:37,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:24:37" (3/3) ... [2020-08-19 03:24:37,706 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c [2020-08-19 03:24:37,717 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:24:37,728 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:24:37,743 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:24:37,774 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:24:37,774 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:24:37,774 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:24:37,774 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:24:37,775 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:24:37,775 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:24:37,775 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:24:37,775 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:24:37,799 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-08-19 03:24:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 03:24:37,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:37,811 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] [2020-08-19 03:24:37,812 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:37,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:37,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1563256651, now seen corresponding path program 1 times [2020-08-19 03:24:37,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:37,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440909246] [2020-08-19 03:24:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,464 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:38,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:24:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:24:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:38,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440909246] [2020-08-19 03:24:38,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:38,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:24:38,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110906529] [2020-08-19 03:24:38,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:24:38,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:38,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:24:38,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:24:38,582 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-08-19 03:24:39,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:39,689 INFO L93 Difference]: Finished difference Result 268 states and 351 transitions. [2020-08-19 03:24:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:24:39,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 03:24:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:39,707 INFO L225 Difference]: With dead ends: 268 [2020-08-19 03:24:39,707 INFO L226 Difference]: Without dead ends: 145 [2020-08-19 03:24:39,712 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 [2020-08-19 03:24:39,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-19 03:24:39,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2020-08-19 03:24:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 03:24:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-19 03:24:39,807 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 52 [2020-08-19 03:24:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:39,808 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-19 03:24:39,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:24:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-19 03:24:39,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 03:24:39,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:39,816 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] [2020-08-19 03:24:39,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:24:39,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:39,819 INFO L82 PathProgramCache]: Analyzing trace with hash 129011283, now seen corresponding path program 1 times [2020-08-19 03:24:39,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:39,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070758933] [2020-08-19 03:24:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:40,317 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:40,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:40,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:40,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:40,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:40,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:40,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:24:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:24:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:40,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:24:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:40,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070758933] [2020-08-19 03:24:40,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:40,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:24:40,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421057561] [2020-08-19 03:24:40,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:24:40,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:40,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:24:40,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:24:40,385 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 4 states. [2020-08-19 03:24:40,891 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:24:41,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:41,595 INFO L93 Difference]: Finished difference Result 197 states and 238 transitions. [2020-08-19 03:24:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:24:41,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 03:24:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:41,599 INFO L225 Difference]: With dead ends: 197 [2020-08-19 03:24:41,600 INFO L226 Difference]: Without dead ends: 129 [2020-08-19 03:24:41,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:24:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-19 03:24:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 105. [2020-08-19 03:24:41,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-19 03:24:41,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-08-19 03:24:41,637 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 53 [2020-08-19 03:24:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:41,637 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-08-19 03:24:41,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:24:41,638 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-08-19 03:24:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 03:24:41,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:41,640 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] [2020-08-19 03:24:41,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:24:41,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:41,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:41,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1511338084, now seen corresponding path program 1 times [2020-08-19 03:24:41,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:41,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212172709] [2020-08-19 03:24:41,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:42,038 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:42,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:42,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:42,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:24:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:24:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:42,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212172709] [2020-08-19 03:24:42,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:42,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:24:42,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701296066] [2020-08-19 03:24:42,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:24:42,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:24:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:24:42,162 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 8 states. [2020-08-19 03:24:42,539 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:24:42,859 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:43,128 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:43,368 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:44,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:44,381 INFO L93 Difference]: Finished difference Result 210 states and 256 transitions. [2020-08-19 03:24:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:24:44,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 03:24:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:44,389 INFO L225 Difference]: With dead ends: 210 [2020-08-19 03:24:44,389 INFO L226 Difference]: Without dead ends: 129 [2020-08-19 03:24:44,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:24:44,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-19 03:24:44,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 105. [2020-08-19 03:24:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-19 03:24:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-08-19 03:24:44,428 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 58 [2020-08-19 03:24:44,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:44,428 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-08-19 03:24:44,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:24:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-08-19 03:24:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 03:24:44,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:44,432 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] [2020-08-19 03:24:44,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:24:44,432 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:44,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:44,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1273380087, now seen corresponding path program 1 times [2020-08-19 03:24:44,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:44,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417109318] [2020-08-19 03:24:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,809 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:44,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:24:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 03:24:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 03:24:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 03:24:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:44,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417109318] [2020-08-19 03:24:44,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:44,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:24:44,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184184506] [2020-08-19 03:24:44,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:24:44,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:44,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:24:44,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:24:44,919 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 8 states. [2020-08-19 03:24:45,343 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:24:46,580 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:46,900 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:47,181 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:47,438 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:24:48,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:48,022 INFO L93 Difference]: Finished difference Result 314 states and 408 transitions. [2020-08-19 03:24:48,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:24:48,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-19 03:24:48,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:48,028 INFO L225 Difference]: With dead ends: 314 [2020-08-19 03:24:48,028 INFO L226 Difference]: Without dead ends: 233 [2020-08-19 03:24:48,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:24:48,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-08-19 03:24:48,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 184. [2020-08-19 03:24:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-08-19 03:24:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 215 transitions. [2020-08-19 03:24:48,083 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 215 transitions. Word has length 66 [2020-08-19 03:24:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:48,083 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 215 transitions. [2020-08-19 03:24:48,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:24:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 215 transitions. [2020-08-19 03:24:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 03:24:48,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:48,087 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] [2020-08-19 03:24:48,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:24:48,087 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:48,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1502182801, now seen corresponding path program 1 times [2020-08-19 03:24:48,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:48,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119230664] [2020-08-19 03:24:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,377 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:48,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 03:24:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:24:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:24:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:24:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 03:24:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:48,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119230664] [2020-08-19 03:24:48,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:48,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:24:48,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456126687] [2020-08-19 03:24:48,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:24:48,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:48,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:24:48,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:24:48,474 INFO L87 Difference]: Start difference. First operand 184 states and 215 transitions. Second operand 6 states. [2020-08-19 03:24:48,763 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:24:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:49,324 INFO L93 Difference]: Finished difference Result 306 states and 373 transitions. [2020-08-19 03:24:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:24:49,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-19 03:24:49,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:49,327 INFO L225 Difference]: With dead ends: 306 [2020-08-19 03:24:49,327 INFO L226 Difference]: Without dead ends: 146 [2020-08-19 03:24:49,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:24:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-19 03:24:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-08-19 03:24:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-19 03:24:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2020-08-19 03:24:49,364 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 70 [2020-08-19 03:24:49,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:49,365 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2020-08-19 03:24:49,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:24:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2020-08-19 03:24:49,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 03:24:49,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:49,366 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] [2020-08-19 03:24:49,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:24:49,367 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:49,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1264318339, now seen corresponding path program 1 times [2020-08-19 03:24:49,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:49,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444617845] [2020-08-19 03:24:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:24:49,435 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:24:49,436 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:24:49,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:24:49,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:24:49 BoogieIcfgContainer [2020-08-19 03:24:49,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:24:49,470 INFO L168 Benchmark]: Toolchain (without parser) took 13724.05 ms. Allocated memory was 141.6 MB in the beginning and 435.2 MB in the end (delta: 293.6 MB). Free memory was 102.0 MB in the beginning and 146.6 MB in the end (delta: -44.6 MB). Peak memory consumption was 249.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:24:49,471 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 03:24:49,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.62 ms. Allocated memory was 141.6 MB in the beginning and 207.1 MB in the end (delta: 65.5 MB). Free memory was 101.8 MB in the beginning and 173.7 MB in the end (delta: -71.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-19 03:24:49,473 INFO L168 Benchmark]: Boogie Preprocessor took 110.43 ms. Allocated memory is still 207.1 MB. Free memory was 173.7 MB in the beginning and 169.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:24:49,474 INFO L168 Benchmark]: RCFGBuilder took 1113.34 ms. Allocated memory was 207.1 MB in the beginning and 233.8 MB in the end (delta: 26.7 MB). Free memory was 169.3 MB in the beginning and 190.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:24:49,475 INFO L168 Benchmark]: TraceAbstraction took 11768.43 ms. Allocated memory was 233.8 MB in the beginning and 435.2 MB in the end (delta: 201.3 MB). Free memory was 189.1 MB in the beginning and 146.6 MB in the end (delta: 42.4 MB). Peak memory consumption was 243.7 MB. Max. memory is 7.1 GB. [2020-08-19 03:24:49,479 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 726.62 ms. Allocated memory was 141.6 MB in the beginning and 207.1 MB in the end (delta: 65.5 MB). Free memory was 101.8 MB in the beginning and 173.7 MB in the end (delta: -71.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.43 ms. Allocated memory is still 207.1 MB. Free memory was 173.7 MB in the beginning and 169.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1113.34 ms. Allocated memory was 207.1 MB in the beginning and 233.8 MB in the end (delta: 26.7 MB). Free memory was 169.3 MB in the beginning and 190.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11768.43 ms. Allocated memory was 233.8 MB in the beginning and 435.2 MB in the end (delta: 201.3 MB). Free memory was 189.1 MB in the beginning and 146.6 MB in the end (delta: 42.4 MB). Peak memory consumption was 243.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 643]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L184] int waterLevel = 1; [L185] int methaneLevelCritical = 0; [L442] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L832] int splverifierCounter ; [L833] int tmp ; [L834] int tmp___0 ; [L835] int tmp___1 ; [L836] int tmp___2 ; [L839] splverifierCounter = 0 [L841] COND TRUE 1 [L843] COND TRUE splverifierCounter < 4 [L849] tmp = __VERIFIER_nondet_int() [L851] COND TRUE \read(tmp) [L853] CALL waterRise() [L202] COND TRUE waterLevel < 2 [L203] waterLevel = waterLevel + 1 [L853] RET waterRise() [L859] tmp___0 = __VERIFIER_nondet_int() [L861] COND FALSE !(\read(tmp___0)) [L869] tmp___2 = __VERIFIER_nondet_int() [L871] COND FALSE !(\read(tmp___2)) [L877] tmp___1 = __VERIFIER_nondet_int() [L879] COND TRUE \read(tmp___1) [L886] CALL timeShift() [L660] COND FALSE !(\read(pumpRunning)) [L667] COND TRUE \read(systemActive) [L669] CALL processEnvironment() [L689] int tmp ; [L692] COND FALSE !(\read(pumpRunning)) [L707] FCALL processEnvironment__wrappee__base() [L669] RET processEnvironment() [L675] CALL __utac_acc__Specification3_spec__1() [L899] int tmp ; [L900] int tmp___0 ; [L901] int tmp___1 ; [L905] CALL, EXPR isMethaneLevelCritical() [L223] int retValue_acc ; [L226] retValue_acc = methaneLevelCritical [L227] return (retValue_acc); [L905] RET, EXPR isMethaneLevelCritical() [L905] tmp = isMethaneLevelCritical() [L907] COND FALSE !(\read(tmp)) [L911] CALL, EXPR getWaterLevel() [L255] int retValue_acc ; [L258] retValue_acc = waterLevel [L259] return (retValue_acc); [L911] RET, EXPR getWaterLevel() [L911] tmp___0 = getWaterLevel() [L913] COND TRUE tmp___0 == 2 [L915] CALL, EXPR isPumpRunning() [L759] int retValue_acc ; [L762] retValue_acc = pumpRunning [L763] return (retValue_acc); [L915] RET, EXPR isPumpRunning() [L915] tmp___1 = isPumpRunning() [L917] COND FALSE !(\read(tmp___1)) [L921] CALL __automaton_fail() [L643] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 461 SDtfs, 744 SDslu, 254 SDs, 0 SdLazy, 1384 SolverSat, 488 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred 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, 5 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 83938 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...