/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:41:19,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:41:19,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:41:19,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:41:19,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:41:19,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:41:19,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:41:19,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:41:19,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:41:19,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:41:19,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:41:19,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:41:19,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:41:19,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:41:19,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:41:19,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:41:19,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:41:19,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:41:19,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:41:19,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:41:19,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:41:19,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:41:19,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:41:19,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:41:19,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:41:19,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:41:19,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:41:19,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:41:19,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:41:19,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:41:19,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:41:19,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:41:19,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:41:19,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:41:19,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:41:19,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:41:19,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:41:19,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:41:19,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:41:19,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:41:19,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:41:19,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 15:41:19,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:41:19,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:41:19,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:41:19,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:41:19,546 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:41:19,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:41:19,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:41:19,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:41:19,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:41:19,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:41:19,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:41:19,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:41:19,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:41:19,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:41:19,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:41:19,549 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:41:19,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:41:19,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:41:19,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:41:19,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:41:19,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:41:19,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:41:19,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:41:19,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:41:19,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:41:19,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:41:19,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:19,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:41:19,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:41:19,552 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:41:19,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:41:19,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:41:19,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:41:19,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:41:19,845 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:41:19,846 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-07-21 15:41:19,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7393f78/b7a947731cff4d498aa5ae7fe00a3e7f/FLAG413405f53 [2020-07-21 15:41:20,419 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:41:20,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-07-21 15:41:20,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7393f78/b7a947731cff4d498aa5ae7fe00a3e7f/FLAG413405f53 [2020-07-21 15:41:20,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7393f78/b7a947731cff4d498aa5ae7fe00a3e7f [2020-07-21 15:41:20,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:41:20,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:41:20,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:41:20,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:41:20,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:41:20,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:41:20" (1/1) ... [2020-07-21 15:41:20,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c8121f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:20, skipping insertion in model container [2020-07-21 15:41:20,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:41:20" (1/1) ... [2020-07-21 15:41:20,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:41:20,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:41:21,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:41:21,161 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:41:21,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:41:21,476 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:41:21,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:21 WrapperNode [2020-07-21 15:41:21,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:41:21,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:41:21,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:41:21,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:41:21,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:21" (1/1) ... [2020-07-21 15:41:21,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:21" (1/1) ... [2020-07-21 15:41:21,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:21" (1/1) ... [2020-07-21 15:41:21,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:21" (1/1) ... [2020-07-21 15:41:21,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:21" (1/1) ... [2020-07-21 15:41:21,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:21" (1/1) ... [2020-07-21 15:41:21,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:21" (1/1) ... [2020-07-21 15:41:21,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:41:21,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:41:21,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:41:21,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:41:21,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-21 15:41:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:41:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:41:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:41:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:41:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:41:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:41:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:41:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:41:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:41:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:41:21,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:41:21,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:41:21,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:41:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:41:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:41:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:41:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:41:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:41:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-07-21 15:41:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:41:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:41:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:41:21,643 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:41:21,643 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:41:21,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:41:21,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:41:21,645 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:41:21,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-21 15:41:21,645 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 15:41:21,645 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 15:41:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:41:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:41:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:41:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:41:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:41:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:41:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:41:21,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-21 15:41:21,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:41:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:41:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:41:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:41:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:41:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:41:21,648 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:41:21,648 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:41:21,648 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:41:21,649 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:41:21,650 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:41:21,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:41:21,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:41:21,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:41:21,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:41:21,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:41:21,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:41:21,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:41:21,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:41:21,651 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:41:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:41:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:41:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:41:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:41:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:41:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:41:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:41:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:41:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:41:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:41:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:41:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:41:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:41:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:41:21,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:41:21,655 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:41:21,655 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:41:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:41:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:41:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-07-21 15:41:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:41:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:41:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-21 15:41:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:41:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:41:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 15:41:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 15:41:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:41:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:41:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-21 15:41:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:41:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:41:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:41:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:41:22,784 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:41:22,785 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:41:22,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:41:22 BoogieIcfgContainer [2020-07-21 15:41:22,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:41:22,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:41:22,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:41:22,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:41:22,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:41:20" (1/3) ... [2020-07-21 15:41:22,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63939a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:41:22, skipping insertion in model container [2020-07-21 15:41:22,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:41:21" (2/3) ... [2020-07-21 15:41:22,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63939a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:41:22, skipping insertion in model container [2020-07-21 15:41:22,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:41:22" (3/3) ... [2020-07-21 15:41:22,798 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2020-07-21 15:41:22,809 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:41:22,817 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:41:22,832 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:41:22,857 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:41:22,857 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:41:22,857 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:41:22,858 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:41:22,858 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:41:22,858 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:41:22,858 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:41:22,858 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:41:22,884 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-07-21 15:41:22,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 15:41:22,894 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:41:22,895 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] [2020-07-21 15:41:22,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:41:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:41:22,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1020125937, now seen corresponding path program 1 times [2020-07-21 15:41:22,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:41:22,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817775890] [2020-07-21 15:41:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:23,291 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:41:23,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:41:23,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:41:23,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:41:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:41:23,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:41:23,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817775890] [2020-07-21 15:41:23,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:41:23,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:41:23,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667274671] [2020-07-21 15:41:23,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:41:23,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:41:23,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:41:23,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:41:23,372 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 2 states. [2020-07-21 15:41:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:41:23,413 INFO L93 Difference]: Finished difference Result 240 states and 297 transitions. [2020-07-21 15:41:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:41:23,415 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2020-07-21 15:41:23,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:41:23,428 INFO L225 Difference]: With dead ends: 240 [2020-07-21 15:41:23,429 INFO L226 Difference]: Without dead ends: 120 [2020-07-21 15:41:23,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:41:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-21 15:41:23,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-07-21 15:41:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-21 15:41:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-07-21 15:41:23,491 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-07-21 15:41:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:41:23,491 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-07-21 15:41:23,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:41:23,492 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-07-21 15:41:23,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 15:41:23,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:41:23,496 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] [2020-07-21 15:41:23,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:23,712 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:41:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:41:23,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1976002315, now seen corresponding path program 1 times [2020-07-21 15:41:23,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:41:23,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735428479] [2020-07-21 15:41:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:24,049 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:41:24,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:41:24,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:41:24,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:41:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:41:24,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:41:24,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735428479] [2020-07-21 15:41:24,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:41:24,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:41:24,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884784511] [2020-07-21 15:41:24,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:41:24,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:41:24,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:41:24,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:41:24,098 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 3 states. [2020-07-21 15:41:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:41:24,117 INFO L93 Difference]: Finished difference Result 179 states and 207 transitions. [2020-07-21 15:41:24,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:41:24,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-21 15:41:24,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:41:24,120 INFO L225 Difference]: With dead ends: 179 [2020-07-21 15:41:24,120 INFO L226 Difference]: Without dead ends: 111 [2020-07-21 15:41:24,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:41:24,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-21 15:41:24,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-07-21 15:41:24,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-21 15:41:24,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-07-21 15:41:24,136 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-07-21 15:41:24,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:41:24,136 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-07-21 15:41:24,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:41:24,137 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-07-21 15:41:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 15:41:24,139 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:41:24,140 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] [2020-07-21 15:41:24,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:24,353 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:41:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:41:24,354 INFO L82 PathProgramCache]: Analyzing trace with hash -979616740, now seen corresponding path program 1 times [2020-07-21 15:41:24,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:41:24,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918126503] [2020-07-21 15:41:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:24,682 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:41:24,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:41:24,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 15:41:24,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:41:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:41:24,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:41:24,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918126503] [2020-07-21 15:41:24,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:41:24,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:41:24,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559241687] [2020-07-21 15:41:24,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:41:24,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:41:24,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:41:24,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:41:24,725 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 3 states. [2020-07-21 15:41:24,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:41:24,758 INFO L93 Difference]: Finished difference Result 281 states and 335 transitions. [2020-07-21 15:41:24,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:41:24,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-07-21 15:41:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:41:24,762 INFO L225 Difference]: With dead ends: 281 [2020-07-21 15:41:24,762 INFO L226 Difference]: Without dead ends: 194 [2020-07-21 15:41:24,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:41:24,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-07-21 15:41:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2020-07-21 15:41:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-07-21 15:41:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 223 transitions. [2020-07-21 15:41:24,791 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 223 transitions. Word has length 58 [2020-07-21 15:41:24,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:41:24,792 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 223 transitions. [2020-07-21 15:41:24,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:41:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 223 transitions. [2020-07-21 15:41:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 15:41:24,795 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:41:24,795 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] [2020-07-21 15:41:25,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:25,009 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:41:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:41:25,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1983050375, now seen corresponding path program 1 times [2020-07-21 15:41:25,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:41:25,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868358787] [2020-07-21 15:41:25,012 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:25,285 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:41:25,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:41:25,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 15:41:25,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:41:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:41:25,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:41:25,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868358787] [2020-07-21 15:41:25,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:41:25,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:41:25,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195915206] [2020-07-21 15:41:25,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:41:25,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:41:25,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:41:25,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:41:25,350 INFO L87 Difference]: Start difference. First operand 188 states and 223 transitions. Second operand 6 states. [2020-07-21 15:41:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:41:25,587 INFO L93 Difference]: Finished difference Result 501 states and 619 transitions. [2020-07-21 15:41:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:41:25,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-07-21 15:41:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:41:25,592 INFO L225 Difference]: With dead ends: 501 [2020-07-21 15:41:25,593 INFO L226 Difference]: Without dead ends: 337 [2020-07-21 15:41:25,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:41:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-21 15:41:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 333. [2020-07-21 15:41:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-07-21 15:41:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 404 transitions. [2020-07-21 15:41:25,629 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 404 transitions. Word has length 63 [2020-07-21 15:41:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:41:25,630 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 404 transitions. [2020-07-21 15:41:25,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:41:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 404 transitions. [2020-07-21 15:41:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-07-21 15:41:25,634 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:41:25,634 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] [2020-07-21 15:41:25,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:25,849 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:41:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:41:25,850 INFO L82 PathProgramCache]: Analyzing trace with hash 935934029, now seen corresponding path program 1 times [2020-07-21 15:41:25,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:41:25,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760369809] [2020-07-21 15:41:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:26,214 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:41:26,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:41:26,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:41:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:41:26,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:41:26,561 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:41:26,562 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:41:26,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:41:26,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:41:26 BoogieIcfgContainer [2020-07-21 15:41:26,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:41:26,931 INFO L168 Benchmark]: Toolchain (without parser) took 6161.73 ms. Allocated memory was 138.9 MB in the beginning and 286.8 MB in the end (delta: 147.8 MB). Free memory was 102.8 MB in the beginning and 214.9 MB in the end (delta: -112.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:41:26,932 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 15:41:26,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.16 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 102.3 MB in the beginning and 174.6 MB in the end (delta: -72.3 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-07-21 15:41:26,934 INFO L168 Benchmark]: Boogie Preprocessor took 94.83 ms. Allocated memory is still 204.5 MB. Free memory was 174.6 MB in the beginning and 170.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:41:26,935 INFO L168 Benchmark]: RCFGBuilder took 1215.88 ms. Allocated memory was 204.5 MB in the beginning and 238.0 MB in the end (delta: 33.6 MB). Free memory was 170.6 MB in the beginning and 201.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2020-07-21 15:41:26,936 INFO L168 Benchmark]: TraceAbstraction took 4136.28 ms. Allocated memory was 238.0 MB in the beginning and 286.8 MB in the end (delta: 48.8 MB). Free memory was 201.7 MB in the beginning and 214.9 MB in the end (delta: -13.2 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-07-21 15:41:26,941 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 709.16 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 102.3 MB in the beginning and 174.6 MB in the end (delta: -72.3 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.83 ms. Allocated memory is still 204.5 MB. Free memory was 174.6 MB in the beginning and 170.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1215.88 ms. Allocated memory was 204.5 MB in the beginning and 238.0 MB in the end (delta: 33.6 MB). Free memory was 170.6 MB in the beginning and 201.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4136.28 ms. Allocated memory was 238.0 MB in the beginning and 286.8 MB in the end (delta: 48.8 MB). Free memory was 201.7 MB in the beginning and 214.9 MB in the end (delta: -13.2 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 927]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=31, \old(head)=69, \old(head)=63, \old(methaneLevelCritical)=48, \old(pumpRunning)=61, \old(systemActive)=78, \old(waterLevel)=85, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L522] int retValue_acc ; [L523] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L527] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L528] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L529] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L529] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L529] tmp = valid_product() [L531] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L533] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L534] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L516] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L766] int splverifierCounter ; [L767] int tmp ; [L768] int tmp___0 ; [L769] int tmp___1 ; [L770] int tmp___2 ; [L773] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L775] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L777] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L783] tmp = __VERIFIER_nondet_int() [L785] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L787] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L787] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L793] tmp___0 = __VERIFIER_nondet_int() [L795] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L803] tmp___2 = __VERIFIER_nondet_int() [L805] COND FALSE !(\read(tmp___2)) [L811] tmp___1 = __VERIFIER_nondet_int() [L813] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L815] CALL stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L745] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L752] systemActive = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L815] RET stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=0, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L822] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L597] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L604] COND FALSE !(\read(systemActive)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L612] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L556] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L556] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L562] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=0, waterLevel=2] [L562] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L566] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L678] int retValue_acc ; [L681] retValue_acc = pumpRunning [L682] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L566] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L572] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L927] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 588 SDtfs, 166 SDslu, 650 SDs, 0 SdLazy, 85 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=333occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 23550 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2709 ConjunctsInSsa, 25 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...