/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_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:03:49,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:03:49,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:03:49,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:03:49,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:03:49,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:03:49,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:03:49,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:03:49,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:03:49,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:03:49,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:03:49,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:03:49,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:03:49,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:03:49,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:03:49,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:03:49,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:03:49,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:03:49,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:03:49,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:03:49,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:03:49,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:03:49,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:03:49,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:03:49,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:03:49,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:03:49,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:03:49,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:03:49,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:03:49,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:03:49,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:03:49,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:03:49,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:03:49,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:03:49,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:03:49,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:03:49,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:03:49,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:03:49,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:03:49,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:03:49,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:03:49,637 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 [2020-07-20 13:03:49,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:03:49,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:03:49,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:03:49,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:03:49,677 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:03:49,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:03:49,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:03:49,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:03:49,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:03:49,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:03:49,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:03:49,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:03:49,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:03:49,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:03:49,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:03:49,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:03:49,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:03:49,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:03:49,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:03:49,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:03:49,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:03:49,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:03:49,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:03:49,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:03:49,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:03:49,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:03:49,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:49,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:03:49,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:03:49,684 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_FUNCTIONS 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 -> 4 [2020-07-20 13:03:49,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:03:49,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:03:49,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:03:49,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:03:49,994 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:03:49,995 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-07-20 13:03:50,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e330d3a/c58599b2a39243848bf372909788ec79/FLAG5e51f8b51 [2020-07-20 13:03:50,600 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:03:50,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-07-20 13:03:50,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e330d3a/c58599b2a39243848bf372909788ec79/FLAG5e51f8b51 [2020-07-20 13:03:50,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e330d3a/c58599b2a39243848bf372909788ec79 [2020-07-20 13:03:50,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:03:50,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:03:50,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:03:50,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:03:50,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:03:50,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:03:50" (1/1) ... [2020-07-20 13:03:50,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a59be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:50, skipping insertion in model container [2020-07-20 13:03:50,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:03:50" (1/1) ... [2020-07-20 13:03:50,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:03:50,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:03:51,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:03:51,391 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:03:51,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:03:51,530 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:03:51,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:51 WrapperNode [2020-07-20 13:03:51,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:03:51,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:03:51,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:03:51,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:03:51,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:51" (1/1) ... [2020-07-20 13:03:51,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:51" (1/1) ... [2020-07-20 13:03:51,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:51" (1/1) ... [2020-07-20 13:03:51,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:51" (1/1) ... [2020-07-20 13:03:51,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:51" (1/1) ... [2020-07-20 13:03:51,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:51" (1/1) ... [2020-07-20 13:03:51,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:51" (1/1) ... [2020-07-20 13:03:51,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:03:51,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:03:51,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:03:51,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:03:51,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:51" (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 [2020-07-20 13:03:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:03:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:03:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 13:03:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 13:03:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 13:03:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 13:03:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 13:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 13:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 13:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-20 13:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 13:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 13:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 13:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 13:03:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:03:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 13:03:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 13:03:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 13:03:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 13:03:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 13:03:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 13:03:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 13:03:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 13:03:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 13:03:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 13:03:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 13:03:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 13:03:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-20 13:03:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 13:03:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 13:03:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 13:03:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 13:03:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 13:03:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 13:03:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 13:03:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 13:03:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 13:03:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 13:03:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-20 13:03:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 13:03:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 13:03:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:03:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:03:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 13:03:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 13:03:51,731 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:03:51,731 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:03:51,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 13:03:51,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:03:51,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:03:51,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:03:51,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:03:51,732 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 13:03:51,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:03:51,732 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 13:03:51,732 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 13:03:51,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:03:51,732 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 13:03:51,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 13:03:51,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:03:51,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 13:03:51,733 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 13:03:51,733 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 13:03:51,733 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 13:03:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-20 13:03:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 13:03:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 13:03:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 13:03:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 13:03:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 13:03:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 13:03:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 13:03:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 13:03:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 13:03:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 13:03:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 13:03:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 13:03:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:03:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 13:03:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 13:03:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 13:03:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 13:03:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 13:03:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-20 13:03:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 13:03:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 13:03:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 13:03:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 13:03:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 13:03:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 13:03:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 13:03:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-20 13:03:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 13:03:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:03:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 13:03:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:03:52,829 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:03:52,830 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 13:03:52,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:03:52 BoogieIcfgContainer [2020-07-20 13:03:52,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:03:52,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:03:52,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:03:52,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:03:52,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:03:50" (1/3) ... [2020-07-20 13:03:52,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3089d4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:03:52, skipping insertion in model container [2020-07-20 13:03:52,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:51" (2/3) ... [2020-07-20 13:03:52,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3089d4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:03:52, skipping insertion in model container [2020-07-20 13:03:52,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:03:52" (3/3) ... [2020-07-20 13:03:52,845 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-07-20 13:03:52,856 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:03:52,866 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:03:52,880 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:03:52,906 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:03:52,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:03:52,906 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:03:52,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:03:52,907 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:03:52,907 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:03:52,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:03:52,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:03:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-07-20 13:03:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 13:03:52,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:52,941 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] [2020-07-20 13:03:52,942 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:52,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1488722281, now seen corresponding path program 1 times [2020-07-20 13:03:52,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:52,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999226316] [2020-07-20 13:03:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 13:03:53,406 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:53,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:53,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:03:53,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:53,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:53,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999226316] [2020-07-20 13:03:53,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:53,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:03:53,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864155886] [2020-07-20 13:03:53,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:03:53,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:53,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:03:53,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:03:53,481 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 2 states. [2020-07-20 13:03:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:53,533 INFO L93 Difference]: Finished difference Result 264 states and 325 transitions. [2020-07-20 13:03:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:03:53,535 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 13:03:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:53,548 INFO L225 Difference]: With dead ends: 264 [2020-07-20 13:03:53,548 INFO L226 Difference]: Without dead ends: 132 [2020-07-20 13:03:53,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:03:53,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-07-20 13:03:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-07-20 13:03:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-07-20 13:03:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-07-20 13:03:53,626 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-07-20 13:03:53,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:53,627 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-07-20 13:03:53,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:03:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-07-20 13:03:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 13:03:53,631 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:53,631 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] [2020-07-20 13:03:53,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:53,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:53,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:53,846 INFO L82 PathProgramCache]: Analyzing trace with hash 469599371, now seen corresponding path program 1 times [2020-07-20 13:03:53,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:53,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770819553] [2020-07-20 13:03:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 13:03:54,268 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:54,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:54,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 13:03:54,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:54,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:54,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770819553] [2020-07-20 13:03:54,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:54,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:03:54,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599631679] [2020-07-20 13:03:54,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:03:54,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:54,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:03:54,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:54,320 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 3 states. [2020-07-20 13:03:54,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:54,343 INFO L93 Difference]: Finished difference Result 209 states and 243 transitions. [2020-07-20 13:03:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:03:54,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 13:03:54,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:54,346 INFO L225 Difference]: With dead ends: 209 [2020-07-20 13:03:54,347 INFO L226 Difference]: Without dead ends: 123 [2020-07-20 13:03:54,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:54,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-07-20 13:03:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-07-20 13:03:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-20 13:03:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-07-20 13:03:54,362 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-07-20 13:03:54,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:54,363 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-07-20 13:03:54,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:03:54,363 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-07-20 13:03:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 13:03:54,365 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:54,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:54,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:54,580 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:54,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:54,581 INFO L82 PathProgramCache]: Analyzing trace with hash 305445596, now seen corresponding path program 1 times [2020-07-20 13:03:54,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:54,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310801509] [2020-07-20 13:03:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 13:03:54,962 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:03:54,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:54,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 13:03:54,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:55,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:55,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310801509] [2020-07-20 13:03:55,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:55,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:03:55,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700135745] [2020-07-20 13:03:55,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:03:55,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:55,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:03:55,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:55,004 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 3 states. [2020-07-20 13:03:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:55,035 INFO L93 Difference]: Finished difference Result 222 states and 261 transitions. [2020-07-20 13:03:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:03:55,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 13:03:55,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:55,038 INFO L225 Difference]: With dead ends: 222 [2020-07-20 13:03:55,038 INFO L226 Difference]: Without dead ends: 123 [2020-07-20 13:03:55,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-07-20 13:03:55,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-07-20 13:03:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-20 13:03:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-07-20 13:03:55,058 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-07-20 13:03:55,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:55,059 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-07-20 13:03:55,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:03:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-07-20 13:03:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 13:03:55,063 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:55,063 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] [2020-07-20 13:03:55,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:55,278 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:55,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:55,278 INFO L82 PathProgramCache]: Analyzing trace with hash 892474279, now seen corresponding path program 1 times [2020-07-20 13:03:55,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:55,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56356722] [2020-07-20 13:03:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 13:03:55,677 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:55,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:55,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 13:03:55,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:55,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:55,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56356722] [2020-07-20 13:03:55,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:55,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:03:55,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542148691] [2020-07-20 13:03:55,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:03:55,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:55,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:03:55,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:03:55,747 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-07-20 13:03:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:56,383 INFO L93 Difference]: Finished difference Result 303 states and 365 transitions. [2020-07-20 13:03:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:03:56,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-07-20 13:03:56,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:56,394 INFO L225 Difference]: With dead ends: 303 [2020-07-20 13:03:56,395 INFO L226 Difference]: Without dead ends: 204 [2020-07-20 13:03:56,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:03:56,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-07-20 13:03:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 188. [2020-07-20 13:03:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-07-20 13:03:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 211 transitions. [2020-07-20 13:03:56,427 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 211 transitions. Word has length 65 [2020-07-20 13:03:56,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:56,428 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 211 transitions. [2020-07-20 13:03:56,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:03:56,428 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 211 transitions. [2020-07-20 13:03:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 13:03:56,431 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:56,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:56,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:56,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:56,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:56,644 INFO L82 PathProgramCache]: Analyzing trace with hash 861206730, now seen corresponding path program 1 times [2020-07-20 13:03:56,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:56,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063455602] [2020-07-20 13:03:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 13:03:57,087 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:03:57,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:57,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 13:03:57,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:57,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:57,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063455602] [2020-07-20 13:03:57,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:57,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:03:57,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191039455] [2020-07-20 13:03:57,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:03:57,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:57,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:03:57,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:03:57,167 INFO L87 Difference]: Start difference. First operand 188 states and 211 transitions. Second operand 6 states. [2020-07-20 13:03:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:57,425 INFO L93 Difference]: Finished difference Result 460 states and 546 transitions. [2020-07-20 13:03:57,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:03:57,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-20 13:03:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:57,430 INFO L225 Difference]: With dead ends: 460 [2020-07-20 13:03:57,430 INFO L226 Difference]: Without dead ends: 296 [2020-07-20 13:03:57,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 13:03:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-07-20 13:03:57,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2020-07-20 13:03:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-07-20 13:03:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 347 transitions. [2020-07-20 13:03:57,464 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 347 transitions. Word has length 79 [2020-07-20 13:03:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:57,464 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 347 transitions. [2020-07-20 13:03:57,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:03:57,465 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 347 transitions. [2020-07-20 13:03:57,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-20 13:03:57,468 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:57,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:57,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:57,685 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:57,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:57,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1471064898, now seen corresponding path program 1 times [2020-07-20 13:03:57,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:57,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432518504] [2020-07-20 13:03:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:58,046 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:58,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:58,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:03:58,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 13:03:58,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:58,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432518504] [2020-07-20 13:03:58,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:58,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:03:58,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213001272] [2020-07-20 13:03:58,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:03:58,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:58,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:03:58,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:03:58,129 INFO L87 Difference]: Start difference. First operand 296 states and 347 transitions. Second operand 6 states. [2020-07-20 13:03:58,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:58,178 INFO L93 Difference]: Finished difference Result 578 states and 692 transitions. [2020-07-20 13:03:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:03:58,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-07-20 13:03:58,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:58,185 INFO L225 Difference]: With dead ends: 578 [2020-07-20 13:03:58,186 INFO L226 Difference]: Without dead ends: 306 [2020-07-20 13:03:58,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:03:58,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-07-20 13:03:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2020-07-20 13:03:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-07-20 13:03:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 358 transitions. [2020-07-20 13:03:58,213 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 358 transitions. Word has length 130 [2020-07-20 13:03:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:58,213 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 358 transitions. [2020-07-20 13:03:58,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:03:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 358 transitions. [2020-07-20 13:03:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-20 13:03:58,216 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:58,217 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:58,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:58,430 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:58,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:58,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1681399932, now seen corresponding path program 1 times [2020-07-20 13:03:58,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:58,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007804287] [2020-07-20 13:03:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:58,811 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:58,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:58,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 13:03:58,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 13:03:58,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:58,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007804287] [2020-07-20 13:03:58,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:58,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:03:58,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913579029] [2020-07-20 13:03:58,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:03:58,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:58,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:03:58,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:03:58,857 INFO L87 Difference]: Start difference. First operand 306 states and 358 transitions. Second operand 5 states. [2020-07-20 13:03:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:58,907 INFO L93 Difference]: Finished difference Result 579 states and 696 transitions. [2020-07-20 13:03:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 13:03:58,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-07-20 13:03:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:58,914 INFO L225 Difference]: With dead ends: 579 [2020-07-20 13:03:58,914 INFO L226 Difference]: Without dead ends: 297 [2020-07-20 13:03:58,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:03:58,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-07-20 13:03:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2020-07-20 13:03:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-07-20 13:03:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 346 transitions. [2020-07-20 13:03:58,961 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 346 transitions. Word has length 130 [2020-07-20 13:03:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:58,962 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 346 transitions. [2020-07-20 13:03:58,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:03:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 346 transitions. [2020-07-20 13:03:58,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-20 13:03:58,968 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:58,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:59,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:59,183 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:59,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:59,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1405649189, now seen corresponding path program 1 times [2020-07-20 13:03:59,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:59,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199779702] [2020-07-20 13:03:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:59,496 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:03:59,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:59,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 13:03:59,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:59,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:59,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199779702] [2020-07-20 13:03:59,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:59,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:03:59,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427786608] [2020-07-20 13:03:59,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:03:59,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:59,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:03:59,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:03:59,558 INFO L87 Difference]: Start difference. First operand 297 states and 346 transitions. Second operand 6 states. [2020-07-20 13:04:00,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:04:00,286 INFO L93 Difference]: Finished difference Result 796 states and 988 transitions. [2020-07-20 13:04:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:04:00,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-07-20 13:04:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:04:00,292 INFO L225 Difference]: With dead ends: 796 [2020-07-20 13:04:00,292 INFO L226 Difference]: Without dead ends: 523 [2020-07-20 13:04:00,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:04:00,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-07-20 13:04:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 507. [2020-07-20 13:04:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-07-20 13:04:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 604 transitions. [2020-07-20 13:04:00,345 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 604 transitions. Word has length 130 [2020-07-20 13:04:00,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:04:00,345 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 604 transitions. [2020-07-20 13:04:00,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:04:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 604 transitions. [2020-07-20 13:04:00,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-20 13:04:00,350 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:04:00,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:04:00,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:04:00,564 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:04:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:04:00,565 INFO L82 PathProgramCache]: Analyzing trace with hash 34208085, now seen corresponding path program 1 times [2020-07-20 13:04:00,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:04:00,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562499442] [2020-07-20 13:04:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:04:01,097 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:04:01,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:04:01,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:04:01,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:04:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:04:01,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:04:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 13:04:01,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562499442] [2020-07-20 13:04:01,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:04:01,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-20 13:04:01,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332276845] [2020-07-20 13:04:01,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 13:04:01,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:04:01,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 13:04:01,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 13:04:01,583 INFO L87 Difference]: Start difference. First operand 507 states and 604 transitions. Second operand 12 states. [2020-07-20 13:04:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:04:03,336 INFO L93 Difference]: Finished difference Result 1331 states and 1704 transitions. [2020-07-20 13:04:03,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 13:04:03,337 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-07-20 13:04:03,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:04:03,344 INFO L225 Difference]: With dead ends: 1331 [2020-07-20 13:04:03,344 INFO L226 Difference]: Without dead ends: 848 [2020-07-20 13:04:03,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 256 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-07-20 13:04:03,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-07-20 13:04:03,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 670. [2020-07-20 13:04:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2020-07-20 13:04:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 789 transitions. [2020-07-20 13:04:03,396 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 789 transitions. Word has length 134 [2020-07-20 13:04:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:04:03,397 INFO L479 AbstractCegarLoop]: Abstraction has 670 states and 789 transitions. [2020-07-20 13:04:03,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 13:04:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 789 transitions. [2020-07-20 13:04:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-07-20 13:04:03,400 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:04:03,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:04:03,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:04:03,615 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:04:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:04:03,616 INFO L82 PathProgramCache]: Analyzing trace with hash -721255629, now seen corresponding path program 1 times [2020-07-20 13:04:03,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:04:03,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214250461] [2020-07-20 13:04:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:04:04,013 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:04:04,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:04:04,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 13:04:04,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:04:04,109 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 13:04:04,110 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:04:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 13:04:04,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:04:04,456 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:04:04,518 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-20 13:04:04,518 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:04:04,581 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-20 13:04:04,582 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:04:04,602 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-20 13:04:04,602 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:04:04,649 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:04:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 50 proven. 23 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-07-20 13:04:04,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214250461] [2020-07-20 13:04:04,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:04:04,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-07-20 13:04:04,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137785932] [2020-07-20 13:04:04,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 13:04:04,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:04:04,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 13:04:04,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-07-20 13:04:04,869 INFO L87 Difference]: Start difference. First operand 670 states and 789 transitions. Second operand 16 states. [2020-07-20 13:04:07,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:04:07,310 INFO L93 Difference]: Finished difference Result 1902 states and 2435 transitions. [2020-07-20 13:04:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 13:04:07,311 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 188 [2020-07-20 13:04:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:04:07,320 INFO L225 Difference]: With dead ends: 1902 [2020-07-20 13:04:07,320 INFO L226 Difference]: Without dead ends: 1302 [2020-07-20 13:04:07,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2020-07-20 13:04:07,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2020-07-20 13:04:07,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 999. [2020-07-20 13:04:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-07-20 13:04:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1165 transitions. [2020-07-20 13:04:07,394 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1165 transitions. Word has length 188 [2020-07-20 13:04:07,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:04:07,395 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1165 transitions. [2020-07-20 13:04:07,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 13:04:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1165 transitions. [2020-07-20 13:04:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-07-20 13:04:07,399 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:04:07,399 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:04:07,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:04:07,613 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:04:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:04:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash 845502321, now seen corresponding path program 1 times [2020-07-20 13:04:07,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:04:07,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17343015] [2020-07-20 13:04:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:04:08,005 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:04:08,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:04:08,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 13:04:08,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:04:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-20 13:04:08,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:04:08,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17343015] [2020-07-20 13:04:08,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:04:08,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:04:08,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833698551] [2020-07-20 13:04:08,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:04:08,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:04:08,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:04:08,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:04:08,065 INFO L87 Difference]: Start difference. First operand 999 states and 1165 transitions. Second operand 6 states. [2020-07-20 13:04:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:04:08,115 INFO L93 Difference]: Finished difference Result 1290 states and 1499 transitions. [2020-07-20 13:04:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:04:08,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 188 [2020-07-20 13:04:08,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:04:08,117 INFO L225 Difference]: With dead ends: 1290 [2020-07-20 13:04:08,118 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 13:04:08,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:04:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 13:04:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 13:04:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 13:04:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 13:04:08,123 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 188 [2020-07-20 13:04:08,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:04:08,123 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 13:04:08,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:04:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 13:04:08,123 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 13:04:08,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:04:08,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 13:04:09,741 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-07-20 13:04:10,038 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 26 [2020-07-20 13:04:10,243 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2020-07-20 13:04:10,350 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 24 [2020-07-20 13:04:10,640 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 21 [2020-07-20 13:04:10,867 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-07-20 13:04:11,053 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 28 [2020-07-20 13:04:11,181 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 26 [2020-07-20 13:04:11,330 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-07-20 13:04:11,816 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-07-20 13:04:12,272 INFO L268 CegarLoopResult]: For program point L123(lines 123 127) no Hoare annotation was computed. [2020-07-20 13:04:12,273 INFO L268 CegarLoopResult]: For program point L123-1(lines 123 127) no Hoare annotation was computed. [2020-07-20 13:04:12,273 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 13:04:12,273 INFO L268 CegarLoopResult]: For program point L117-2(lines 117 138) no Hoare annotation was computed. [2020-07-20 13:04:12,274 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_freeFINAL(lines 92 147) no Hoare annotation was computed. [2020-07-20 13:04:12,274 INFO L268 CegarLoopResult]: For program point L139(lines 116 140) no Hoare annotation was computed. [2020-07-20 13:04:12,274 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_freeEXIT(lines 92 147) no Hoare annotation was computed. [2020-07-20 13:04:12,274 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_freeENTRY(lines 92 147) no Hoare annotation was computed. [2020-07-20 13:04:12,274 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 13:04:12,274 INFO L268 CegarLoopResult]: For program point L193-1(line 193) no Hoare annotation was computed. [2020-07-20 13:04:12,274 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_resetFINAL(lines 148 207) no Hoare annotation was computed. [2020-07-20 13:04:12,274 INFO L268 CegarLoopResult]: For program point L180(lines 180 184) no Hoare annotation was computed. [2020-07-20 13:04:12,275 INFO L268 CegarLoopResult]: For program point L180-1(lines 180 184) no Hoare annotation was computed. [2020-07-20 13:04:12,275 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 13:04:12,275 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_resetENTRY(lines 148 207) no Hoare annotation was computed. [2020-07-20 13:04:12,275 INFO L268 CegarLoopResult]: For program point L174-2(lines 174 199) no Hoare annotation was computed. [2020-07-20 13:04:12,275 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_resetEXIT(lines 148 207) no Hoare annotation was computed. [2020-07-20 13:04:12,275 INFO L268 CegarLoopResult]: For program point L200(lines 173 201) no Hoare annotation was computed. [2020-07-20 13:04:12,275 INFO L271 CegarLoopResult]: At program point select_helpersFINAL(lines 566 572) the Hoare annotation is: true [2020-07-20 13:04:12,276 INFO L268 CegarLoopResult]: For program point select_helpersEXIT(lines 566 572) no Hoare annotation was computed. [2020-07-20 13:04:12,276 INFO L268 CegarLoopResult]: For program point valid_productEXIT(lines 573 581) no Hoare annotation was computed. [2020-07-20 13:04:12,276 INFO L271 CegarLoopResult]: At program point valid_productENTRY(lines 573 581) the Hoare annotation is: true [2020-07-20 13:04:12,276 INFO L268 CegarLoopResult]: For program point valid_productFINAL(lines 573 581) no Hoare annotation was computed. [2020-07-20 13:04:12,276 INFO L268 CegarLoopResult]: For program point L417(lines 417 430) no Hoare annotation was computed. [2020-07-20 13:04:12,279 INFO L268 CegarLoopResult]: For program point L417-1(lines 409 433) no Hoare annotation was computed. [2020-07-20 13:04:12,279 INFO L271 CegarLoopResult]: At program point L415(line 415) the Hoare annotation is: true [2020-07-20 13:04:12,280 INFO L271 CegarLoopResult]: At program point __utac_acc__Specification4_spec__1ENTRY(lines 409 433) the Hoare annotation is: true [2020-07-20 13:04:12,280 INFO L268 CegarLoopResult]: For program point L415-1(line 415) no Hoare annotation was computed. [2020-07-20 13:04:12,280 INFO L268 CegarLoopResult]: For program point __utac_acc__Specification4_spec__1EXIT(lines 409 433) no Hoare annotation was computed. [2020-07-20 13:04:12,280 INFO L264 CegarLoopResult]: At program point L423(line 423) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~systemActive~0)))) (and (or (not (<= 1 ~waterLevel~0)) .cse0 (not (= 0 ~pumpRunning~0))) (or .cse0 (not (<= 2 ~waterLevel~0))))) [2020-07-20 13:04:12,280 INFO L268 CegarLoopResult]: For program point L421(lines 421 427) no Hoare annotation was computed. [2020-07-20 13:04:12,280 INFO L264 CegarLoopResult]: At program point L419(line 419) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~systemActive~0)))) (and (or (not (<= 1 ~waterLevel~0)) .cse0 (not (= 0 ~pumpRunning~0))) (or .cse0 (not (<= 2 ~waterLevel~0))))) [2020-07-20 13:04:12,281 INFO L268 CegarLoopResult]: For program point L419-1(line 419) no Hoare annotation was computed. [2020-07-20 13:04:12,282 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 515 537) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-20 13:04:12,282 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 515 537) no Hoare annotation was computed. [2020-07-20 13:04:12,282 INFO L264 CegarLoopResult]: At program point L527(line 527) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-20 13:04:12,282 INFO L264 CegarLoopResult]: At program point L527-1(line 527) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-20 13:04:12,282 INFO L268 CegarLoopResult]: For program point L525(lines 525 532) no Hoare annotation was computed. [2020-07-20 13:04:12,282 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 515 537) no Hoare annotation was computed. [2020-07-20 13:04:12,282 INFO L268 CegarLoopResult]: For program point L525-1(lines 525 532) no Hoare annotation was computed. [2020-07-20 13:04:12,283 INFO L268 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-07-20 13:04:12,283 INFO L264 CegarLoopResult]: At program point L522(line 522) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-20 13:04:12,283 INFO L264 CegarLoopResult]: At program point L521(line 521) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-20 13:04:12,283 INFO L264 CegarLoopResult]: At program point L521-1(line 521) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-20 13:04:12,283 INFO L268 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-07-20 13:04:12,283 INFO L268 CegarLoopResult]: For program point L480(line 480) no Hoare annotation was computed. [2020-07-20 13:04:12,284 INFO L268 CegarLoopResult]: For program point Specification2EXIT(lines 470 493) no Hoare annotation was computed. [2020-07-20 13:04:12,284 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 13:04:12,284 INFO L268 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-07-20 13:04:12,284 INFO L268 CegarLoopResult]: For program point L477(line 477) no Hoare annotation was computed. [2020-07-20 13:04:12,284 INFO L268 CegarLoopResult]: For program point Specification2ENTRY(lines 470 493) no Hoare annotation was computed. [2020-07-20 13:04:12,284 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 13:04:12,284 INFO L268 CegarLoopResult]: For program point Specification2FINAL(lines 470 493) no Hoare annotation was computed. [2020-07-20 13:04:12,284 INFO L268 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-07-20 13:04:12,285 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 13:04:12,285 INFO L268 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-07-20 13:04:12,285 INFO L268 CegarLoopResult]: For program point L486(line 486) no Hoare annotation was computed. [2020-07-20 13:04:12,285 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 13:04:12,286 INFO L268 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-07-20 13:04:12,286 INFO L268 CegarLoopResult]: For program point L483(line 483) no Hoare annotation was computed. [2020-07-20 13:04:12,286 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 13:04:12,286 INFO L268 CegarLoopResult]: For program point isPumpRunningEXIT(lines 807 815) no Hoare annotation was computed. [2020-07-20 13:04:12,286 INFO L271 CegarLoopResult]: At program point isPumpRunningENTRY(lines 807 815) the Hoare annotation is: true [2020-07-20 13:04:12,286 INFO L268 CegarLoopResult]: For program point isPumpRunningFINAL(lines 807 815) no Hoare annotation was computed. [2020-07-20 13:04:12,286 INFO L268 CegarLoopResult]: For program point L880(lines 880 884) no Hoare annotation was computed. [2020-07-20 13:04:12,287 INFO L271 CegarLoopResult]: At program point L878(line 878) the Hoare annotation is: true [2020-07-20 13:04:12,287 INFO L268 CegarLoopResult]: For program point L880-2(lines 880 884) no Hoare annotation was computed. [2020-07-20 13:04:12,287 INFO L268 CegarLoopResult]: For program point L878-1(line 878) no Hoare annotation was computed. [2020-07-20 13:04:12,287 INFO L271 CegarLoopResult]: At program point isLowWaterLevelENTRY(lines 871 889) the Hoare annotation is: true [2020-07-20 13:04:12,287 INFO L268 CegarLoopResult]: For program point isLowWaterLevelEXIT(lines 871 889) no Hoare annotation was computed. [2020-07-20 13:04:12,287 INFO L268 CegarLoopResult]: For program point isLowWaterLevelFINAL(lines 871 889) no Hoare annotation was computed. [2020-07-20 13:04:12,287 INFO L268 CegarLoopResult]: For program point L835-2(lines 835 843) no Hoare annotation was computed. [2020-07-20 13:04:12,287 INFO L268 CegarLoopResult]: For program point L823(lines 823 831) no Hoare annotation was computed. [2020-07-20 13:04:12,288 INFO L268 CegarLoopResult]: For program point L823-2(lines 823 831) no Hoare annotation was computed. [2020-07-20 13:04:12,288 INFO L268 CegarLoopResult]: For program point printPumpFINAL(lines 816 851) no Hoare annotation was computed. [2020-07-20 13:04:12,288 INFO L268 CegarLoopResult]: For program point L846(line 846) no Hoare annotation was computed. [2020-07-20 13:04:12,288 INFO L268 CegarLoopResult]: For program point L846-1(line 846) no Hoare annotation was computed. [2020-07-20 13:04:12,288 INFO L268 CegarLoopResult]: For program point printPumpENTRY(lines 816 851) no Hoare annotation was computed. [2020-07-20 13:04:12,288 INFO L268 CegarLoopResult]: For program point L835(lines 835 843) no Hoare annotation was computed. [2020-07-20 13:04:12,288 INFO L268 CegarLoopResult]: For program point printPumpEXIT(lines 816 851) no Hoare annotation was computed. [2020-07-20 13:04:12,288 INFO L268 CegarLoopResult]: For program point select_featuresEXIT(lines 559 565) no Hoare annotation was computed. [2020-07-20 13:04:12,289 INFO L271 CegarLoopResult]: At program point select_featuresFINAL(lines 559 565) the Hoare annotation is: true [2020-07-20 13:04:12,289 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_setENTRY(lines 46 91) no Hoare annotation was computed. [2020-07-20 13:04:12,289 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_setEXIT(lines 46 91) no Hoare annotation was computed. [2020-07-20 13:04:12,289 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_setFINAL(lines 46 91) no Hoare annotation was computed. [2020-07-20 13:04:12,289 INFO L268 CegarLoopResult]: For program point L379(lines 379 386) no Hoare annotation was computed. [2020-07-20 13:04:12,289 INFO L268 CegarLoopResult]: For program point __utac__get_this_argtypeFINAL(lines 359 404) no Hoare annotation was computed. [2020-07-20 13:04:12,289 INFO L268 CegarLoopResult]: For program point L373(lines 373 393) no Hoare annotation was computed. [2020-07-20 13:04:12,290 INFO L268 CegarLoopResult]: For program point L373-1(lines 373 393) no Hoare annotation was computed. [2020-07-20 13:04:12,290 INFO L268 CegarLoopResult]: For program point __utac__get_this_argtypeENTRY(lines 359 404) no Hoare annotation was computed. [2020-07-20 13:04:12,290 INFO L268 CegarLoopResult]: For program point __utac__get_this_argtypeEXIT(lines 359 404) no Hoare annotation was computed. [2020-07-20 13:04:12,291 INFO L264 CegarLoopResult]: At program point runTestENTRY(lines 502 511) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-20 13:04:12,291 INFO L268 CegarLoopResult]: For program point runTestEXIT(lines 502 511) no Hoare annotation was computed. [2020-07-20 13:04:12,291 INFO L268 CegarLoopResult]: For program point runTestFINAL(lines 502 511) no Hoare annotation was computed. [2020-07-20 13:04:12,291 INFO L268 CegarLoopResult]: For program point L801(line 801) no Hoare annotation was computed. [2020-07-20 13:04:12,291 INFO L268 CegarLoopResult]: For program point L801-1(line 801) no Hoare annotation was computed. [2020-07-20 13:04:12,291 INFO L268 CegarLoopResult]: For program point isMethaneAlarmENTRY(lines 796 806) no Hoare annotation was computed. [2020-07-20 13:04:12,291 INFO L268 CegarLoopResult]: For program point isMethaneAlarmEXIT(lines 796 806) no Hoare annotation was computed. [2020-07-20 13:04:12,291 INFO L268 CegarLoopResult]: For program point isMethaneAlarmFINAL(lines 796 806) no Hoare annotation was computed. [2020-07-20 13:04:12,292 INFO L264 CegarLoopResult]: At program point deactivatePumpENTRY(lines 788 795) the Hoare annotation is: (or (= 0 |old(~pumpRunning~0)|) (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (= ~pumpRunning~0 |old(~pumpRunning~0)|)) [2020-07-20 13:04:12,292 INFO L268 CegarLoopResult]: For program point deactivatePumpEXIT(lines 788 795) no Hoare annotation was computed. [2020-07-20 13:04:12,292 INFO L268 CegarLoopResult]: For program point deactivatePumpFINAL(lines 788 795) no Hoare annotation was computed. [2020-07-20 13:04:12,292 INFO L268 CegarLoopResult]: For program point L671(lines 671 677) no Hoare annotation was computed. [2020-07-20 13:04:12,292 INFO L268 CegarLoopResult]: For program point isHighWaterSensorDryEXIT(lines 667 680) no Hoare annotation was computed. [2020-07-20 13:04:12,292 INFO L271 CegarLoopResult]: At program point isHighWaterSensorDryENTRY(lines 667 680) the Hoare annotation is: true [2020-07-20 13:04:12,292 INFO L268 CegarLoopResult]: For program point isHighWaterSensorDryFINAL(lines 667 680) no Hoare annotation was computed. [2020-07-20 13:04:12,293 INFO L264 CegarLoopResult]: At program point L769(line 769) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0))) [2020-07-20 13:04:12,293 INFO L264 CegarLoopResult]: At program point L765(line 765) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~waterLevel~0))) (.cse1 (not (<= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 0 |old(~pumpRunning~0)|))) (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 1 processEnvironment_~tmp~6))))) [2020-07-20 13:04:12,293 INFO L268 CegarLoopResult]: For program point L763(lines 763 771) no Hoare annotation was computed. [2020-07-20 13:04:12,293 INFO L264 CegarLoopResult]: At program point L761(line 761) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~waterLevel~0))) (.cse1 (not (<= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 0 |old(~pumpRunning~0)|))) (or .cse0 .cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)))) [2020-07-20 13:04:12,293 INFO L268 CegarLoopResult]: For program point L761-1(line 761) no Hoare annotation was computed. [2020-07-20 13:04:12,293 INFO L268 CegarLoopResult]: For program point L759(lines 759 776) no Hoare annotation was computed. [2020-07-20 13:04:12,293 INFO L268 CegarLoopResult]: For program point processEnvironmentEXIT(lines 755 779) no Hoare annotation was computed. [2020-07-20 13:04:12,294 INFO L264 CegarLoopResult]: At program point processEnvironmentENTRY(lines 755 779) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (= ~pumpRunning~0 |old(~pumpRunning~0)|)) [2020-07-20 13:04:12,294 INFO L264 CegarLoopResult]: At program point L774(line 774) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~waterLevel~0))) (.cse1 (not (<= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (= 0 ~pumpRunning~0)) (or (= 0 |old(~pumpRunning~0)|) .cse0 .cse1))) [2020-07-20 13:04:12,294 INFO L268 CegarLoopResult]: For program point L774-1(lines 755 779) no Hoare annotation was computed. [2020-07-20 13:04:12,294 INFO L268 CegarLoopResult]: For program point processEnvironment__wrappee__baseEXIT(lines 721 727) no Hoare annotation was computed. [2020-07-20 13:04:12,294 INFO L271 CegarLoopResult]: At program point processEnvironment__wrappee__baseFINAL(lines 721 727) the Hoare annotation is: true [2020-07-20 13:04:12,294 INFO L268 CegarLoopResult]: For program point L929(lines 929 935) no Hoare annotation was computed. [2020-07-20 13:04:12,294 INFO L268 CegarLoopResult]: For program point L929-1(lines 929 935) no Hoare annotation was computed. [2020-07-20 13:04:12,295 INFO L264 CegarLoopResult]: At program point testENTRY(lines 899 964) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-20 13:04:12,295 INFO L264 CegarLoopResult]: At program point L954(lines 909 956) the Hoare annotation is: (let ((.cse0 (<= test_~splverifierCounter~0 0)) (.cse1 (<= 1 ~systemActive~0))) (or (not (<= |old(~waterLevel~0)| 1)) (and (<= 1 ~waterLevel~0) (= 0 ~pumpRunning~0) .cse0 .cse1) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse0 .cse1) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|)))) [2020-07-20 13:04:12,295 INFO L264 CegarLoopResult]: At program point L921(line 921) the Hoare annotation is: (let ((.cse0 (<= test_~splverifierCounter~0 0)) (.cse1 (<= 1 ~systemActive~0))) (or (not (<= |old(~waterLevel~0)| 1)) (and (<= 1 ~waterLevel~0) (= 0 ~pumpRunning~0) .cse0 .cse1) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse0 .cse1) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|)))) [2020-07-20 13:04:12,295 INFO L268 CegarLoopResult]: For program point L919(lines 919 925) no Hoare annotation was computed. [2020-07-20 13:04:12,295 INFO L268 CegarLoopResult]: For program point testFINAL(lines 899 964) no Hoare annotation was computed. [2020-07-20 13:04:12,295 INFO L268 CegarLoopResult]: For program point L919-1(lines 919 925) no Hoare annotation was computed. [2020-07-20 13:04:12,295 INFO L268 CegarLoopResult]: For program point L911(lines 911 915) no Hoare annotation was computed. [2020-07-20 13:04:12,296 INFO L264 CegarLoopResult]: At program point L957(lines 908 958) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-20 13:04:12,296 INFO L268 CegarLoopResult]: For program point L947(lines 947 951) no Hoare annotation was computed. [2020-07-20 13:04:12,296 INFO L264 CegarLoopResult]: At program point L947-2(lines 939 952) the Hoare annotation is: (let ((.cse0 (<= test_~splverifierCounter~0 0)) (.cse1 (<= 1 ~systemActive~0))) (or (not (<= |old(~waterLevel~0)| 1)) (and (<= 1 ~waterLevel~0) (= 0 ~pumpRunning~0) .cse0 .cse1) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse0 .cse1) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|)))) [2020-07-20 13:04:12,296 INFO L268 CegarLoopResult]: For program point L910(lines 909 956) no Hoare annotation was computed. [2020-07-20 13:04:12,296 INFO L264 CegarLoopResult]: At program point L941(line 941) the Hoare annotation is: (let ((.cse0 (<= test_~splverifierCounter~0 0)) (.cse1 (<= 1 ~systemActive~0))) (or (not (<= |old(~waterLevel~0)| 1)) (and (<= 1 ~waterLevel~0) (= 0 ~pumpRunning~0) .cse0 .cse1) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse0 .cse1) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|)))) [2020-07-20 13:04:12,296 INFO L268 CegarLoopResult]: For program point L939(lines 939 952) no Hoare annotation was computed. [2020-07-20 13:04:12,297 INFO L264 CegarLoopResult]: At program point L931(line 931) the Hoare annotation is: (let ((.cse0 (<= test_~splverifierCounter~0 0)) (.cse1 (<= 1 ~systemActive~0))) (or (not (<= |old(~waterLevel~0)| 1)) (and (<= 1 ~waterLevel~0) (= 0 ~pumpRunning~0) .cse0 .cse1) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse0 .cse1) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|)))) [2020-07-20 13:04:12,297 INFO L268 CegarLoopResult]: For program point testEXIT(lines 899 964) no Hoare annotation was computed. [2020-07-20 13:04:12,297 INFO L268 CegarLoopResult]: For program point __utac__get_this_argENTRY(lines 313 358) no Hoare annotation was computed. [2020-07-20 13:04:12,297 INFO L268 CegarLoopResult]: For program point __utac__get_this_argEXIT(lines 313 358) no Hoare annotation was computed. [2020-07-20 13:04:12,297 INFO L268 CegarLoopResult]: For program point __utac__get_this_argFINAL(lines 313 358) no Hoare annotation was computed. [2020-07-20 13:04:12,297 INFO L268 CegarLoopResult]: For program point L333(lines 333 340) no Hoare annotation was computed. [2020-07-20 13:04:12,297 INFO L268 CegarLoopResult]: For program point L327(lines 327 347) no Hoare annotation was computed. [2020-07-20 13:04:12,297 INFO L268 CegarLoopResult]: For program point L327-1(lines 327 347) no Hoare annotation was computed. [2020-07-20 13:04:12,298 INFO L268 CegarLoopResult]: For program point isLowWaterSensorDryFINAL(lines 681 689) no Hoare annotation was computed. [2020-07-20 13:04:12,298 INFO L271 CegarLoopResult]: At program point isLowWaterSensorDryENTRY(lines 681 689) the Hoare annotation is: true [2020-07-20 13:04:12,298 INFO L268 CegarLoopResult]: For program point isLowWaterSensorDryEXIT(lines 681 689) no Hoare annotation was computed. [2020-07-20 13:04:12,298 INFO L268 CegarLoopResult]: For program point L643-2(lines 643 651) no Hoare annotation was computed. [2020-07-20 13:04:12,298 INFO L268 CegarLoopResult]: For program point printEnvironmentEXIT(lines 635 657) no Hoare annotation was computed. [2020-07-20 13:04:12,298 INFO L268 CegarLoopResult]: For program point printEnvironmentENTRY(lines 635 657) no Hoare annotation was computed. [2020-07-20 13:04:12,298 INFO L268 CegarLoopResult]: For program point printEnvironmentFINAL(lines 635 657) no Hoare annotation was computed. [2020-07-20 13:04:12,298 INFO L268 CegarLoopResult]: For program point L643(lines 643 651) no Hoare annotation was computed. [2020-07-20 13:04:12,299 INFO L268 CegarLoopResult]: For program point L256(lines 256 297) no Hoare annotation was computed. [2020-07-20 13:04:12,299 INFO L268 CegarLoopResult]: For program point __utac__error_stack_mgtENTRY(lines 210 312) no Hoare annotation was computed. [2020-07-20 13:04:12,299 INFO L268 CegarLoopResult]: For program point L275(line 275) no Hoare annotation was computed. [2020-07-20 13:04:12,299 INFO L268 CegarLoopResult]: For program point L275-1(line 275) no Hoare annotation was computed. [2020-07-20 13:04:12,299 INFO L268 CegarLoopResult]: For program point L234(lines 234 238) no Hoare annotation was computed. [2020-07-20 13:04:12,299 INFO L268 CegarLoopResult]: For program point L298(lines 298 309) no Hoare annotation was computed. [2020-07-20 13:04:12,299 INFO L268 CegarLoopResult]: For program point __utac__error_stack_mgtFINAL(lines 210 312) no Hoare annotation was computed. [2020-07-20 13:04:12,299 INFO L268 CegarLoopResult]: For program point L261(lines 261 265) no Hoare annotation was computed. [2020-07-20 13:04:12,300 INFO L268 CegarLoopResult]: For program point L259-2(lines 259 279) no Hoare annotation was computed. [2020-07-20 13:04:12,300 INFO L268 CegarLoopResult]: For program point L280(lines 258 281) no Hoare annotation was computed. [2020-07-20 13:04:12,300 INFO L268 CegarLoopResult]: For program point __utac__error_stack_mgtEXIT(lines 210 312) no Hoare annotation was computed. [2020-07-20 13:04:12,300 INFO L268 CegarLoopResult]: For program point L239(lines 239 255) no Hoare annotation was computed. [2020-07-20 13:04:12,300 INFO L268 CegarLoopResult]: For program point L299(lines 299 306) no Hoare annotation was computed. [2020-07-20 13:04:12,300 INFO L268 CegarLoopResult]: For program point L260(lines 259 279) no Hoare annotation was computed. [2020-07-20 13:04:12,300 INFO L268 CegarLoopResult]: For program point L291(line 291) no Hoare annotation was computed. [2020-07-20 13:04:12,300 INFO L268 CegarLoopResult]: For program point L291-1(line 291) no Hoare annotation was computed. [2020-07-20 13:04:12,301 INFO L268 CegarLoopResult]: For program point select_oneENTRY(lines 549 558) no Hoare annotation was computed. [2020-07-20 13:04:12,301 INFO L268 CegarLoopResult]: For program point select_oneFINAL(lines 549 558) no Hoare annotation was computed. [2020-07-20 13:04:12,301 INFO L268 CegarLoopResult]: For program point select_oneEXIT(lines 549 558) no Hoare annotation was computed. [2020-07-20 13:04:12,301 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 13:04:12,301 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0)) [2020-07-20 13:04:12,301 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 13:04:12,301 INFO L268 CegarLoopResult]: For program point activatePumpFINAL(lines 780 787) no Hoare annotation was computed. [2020-07-20 13:04:12,302 INFO L268 CegarLoopResult]: For program point activatePumpEXIT(lines 780 787) no Hoare annotation was computed. [2020-07-20 13:04:12,302 INFO L264 CegarLoopResult]: At program point activatePumpENTRY(lines 780 787) the Hoare annotation is: (or (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0) (not (<= 2 ~waterLevel~0))) [2020-07-20 13:04:12,302 INFO L271 CegarLoopResult]: At program point getWaterLevelENTRY(lines 658 666) the Hoare annotation is: true [2020-07-20 13:04:12,303 INFO L268 CegarLoopResult]: For program point getWaterLevelFINAL(lines 658 666) no Hoare annotation was computed. [2020-07-20 13:04:12,303 INFO L268 CegarLoopResult]: For program point getWaterLevelEXIT(lines 658 666) no Hoare annotation was computed. [2020-07-20 13:04:12,303 INFO L268 CegarLoopResult]: For program point isHighWaterLevelEXIT(lines 852 870) no Hoare annotation was computed. [2020-07-20 13:04:12,303 INFO L268 CegarLoopResult]: For program point L861(lines 861 865) no Hoare annotation was computed. [2020-07-20 13:04:12,303 INFO L271 CegarLoopResult]: At program point L859(line 859) the Hoare annotation is: true [2020-07-20 13:04:12,303 INFO L268 CegarLoopResult]: For program point L861-2(lines 861 865) no Hoare annotation was computed. [2020-07-20 13:04:12,303 INFO L268 CegarLoopResult]: For program point L859-1(line 859) no Hoare annotation was computed. [2020-07-20 13:04:12,303 INFO L271 CegarLoopResult]: At program point isHighWaterLevelENTRY(lines 852 870) the Hoare annotation is: true [2020-07-20 13:04:12,303 INFO L268 CegarLoopResult]: For program point isHighWaterLevelFINAL(lines 852 870) no Hoare annotation was computed. [2020-07-20 13:04:12,304 INFO L268 CegarLoopResult]: For program point ##fun~int~X~int~TO~intEXIT(line -1) no Hoare annotation was computed. [2020-07-20 13:04:12,304 INFO L268 CegarLoopResult]: For program point ##fun~int~X~int~TO~intENTRY(line -1) no Hoare annotation was computed. [2020-07-20 13:04:12,304 INFO L268 CegarLoopResult]: For program point ##fun~int~X~int~TO~intFINAL(line -1) no Hoare annotation was computed. [2020-07-20 13:04:12,304 INFO L271 CegarLoopResult]: At program point changeMethaneLevelENTRY(lines 614 625) the Hoare annotation is: true [2020-07-20 13:04:12,304 INFO L268 CegarLoopResult]: For program point L618-1(lines 614 625) no Hoare annotation was computed. [2020-07-20 13:04:12,304 INFO L268 CegarLoopResult]: For program point changeMethaneLevelEXIT(lines 614 625) no Hoare annotation was computed. [2020-07-20 13:04:12,304 INFO L264 CegarLoopResult]: At program point L703(line 703) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~systemActive~0)))) (and (or .cse0 (not (<= 2 |old(~waterLevel~0)|)) (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse0 (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|))))) [2020-07-20 13:04:12,304 INFO L268 CegarLoopResult]: For program point L701(lines 700 719) no Hoare annotation was computed. [2020-07-20 13:04:12,305 INFO L264 CegarLoopResult]: At program point timeShiftENTRY(lines 697 720) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~systemActive~0))) (.cse1 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse2 (<= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (not (<= 2 |old(~waterLevel~0)|)) (and .cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2)) (or .cse0 (and .cse1 (= 0 ~pumpRunning~0) .cse2) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|))))) [2020-07-20 13:04:12,305 INFO L268 CegarLoopResult]: For program point timeShiftEXIT(lines 697 720) no Hoare annotation was computed. [2020-07-20 13:04:12,305 INFO L268 CegarLoopResult]: For program point timeShiftFINAL(lines 697 720) no Hoare annotation was computed. [2020-07-20 13:04:12,306 INFO L264 CegarLoopResult]: At program point L710(line 710) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~systemActive~0))) (.cse1 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (and (or .cse0 (and .cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (and .cse1 (= 0 ~pumpRunning~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|))))) [2020-07-20 13:04:12,306 INFO L264 CegarLoopResult]: At program point L708(lines 708 714) the Hoare annotation is: (let ((.cse1 (not (<= 1 ~systemActive~0))) (.cse2 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse3 (= 0 ~pumpRunning~0)) (.cse0 (= 0 |old(~pumpRunning~0)|))) (and (or .cse0 .cse1 (and .cse2 (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse3) (not (<= 2 |old(~waterLevel~0)|))) (let ((.cse4 (<= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse1 (and (<= 2 ~waterLevel~0) .cse2 .cse4) (and .cse3 (<= ~waterLevel~0 1) .cse4) (not .cse0) (not (<= 1 |old(~waterLevel~0)|)))))) [2020-07-20 13:04:12,306 INFO L268 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-07-20 13:04:12,306 INFO L268 CegarLoopResult]: For program point cleanupEXIT(lines 437 466) no Hoare annotation was computed. [2020-07-20 13:04:12,307 INFO L271 CegarLoopResult]: At program point L447-2(lines 447 461) the Hoare annotation is: true [2020-07-20 13:04:12,307 INFO L271 CegarLoopResult]: At program point cleanupENTRY(lines 437 466) the Hoare annotation is: true [2020-07-20 13:04:12,307 INFO L271 CegarLoopResult]: At program point L443(line 443) the Hoare annotation is: true [2020-07-20 13:04:12,307 INFO L268 CegarLoopResult]: For program point L443-1(line 443) no Hoare annotation was computed. [2020-07-20 13:04:12,307 INFO L271 CegarLoopResult]: At program point L462(lines 437 466) the Hoare annotation is: true [2020-07-20 13:04:12,307 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 13:04:12,307 INFO L268 CegarLoopResult]: For program point L451(lines 451 455) no Hoare annotation was computed. [2020-07-20 13:04:12,307 INFO L271 CegarLoopResult]: At program point L451-1(lines 451 455) the Hoare annotation is: true [2020-07-20 13:04:12,308 INFO L268 CegarLoopResult]: For program point isMethaneLevelCriticalENTRY(lines 626 634) no Hoare annotation was computed. [2020-07-20 13:04:12,308 INFO L268 CegarLoopResult]: For program point isMethaneLevelCriticalFINAL(lines 626 634) no Hoare annotation was computed. [2020-07-20 13:04:12,308 INFO L268 CegarLoopResult]: For program point isMethaneLevelCriticalEXIT(lines 626 634) no Hoare annotation was computed. [2020-07-20 13:04:12,309 INFO L268 CegarLoopResult]: For program point L594-1(lines 590 601) no Hoare annotation was computed. [2020-07-20 13:04:12,309 INFO L264 CegarLoopResult]: At program point lowerWaterLevelENTRY(lines 590 601) the Hoare annotation is: (or (not (<= 1 ~systemActive~0)) (= 0 ~pumpRunning~0) (not (<= 2 |old(~waterLevel~0)|)) (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0))) [2020-07-20 13:04:12,309 INFO L268 CegarLoopResult]: For program point lowerWaterLevelEXIT(lines 590 601) no Hoare annotation was computed. [2020-07-20 13:04:12,309 INFO L268 CegarLoopResult]: For program point setupEXIT(lines 494 500) no Hoare annotation was computed. [2020-07-20 13:04:12,309 INFO L271 CegarLoopResult]: At program point setupFINAL(lines 494 500) the Hoare annotation is: true [2020-07-20 13:04:12,309 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 13:04:12,310 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 1 ~waterLevel~0) (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0)) [2020-07-20 13:04:12,310 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 13:04:12,310 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 13:04:12,310 INFO L268 CegarLoopResult]: For program point startSystemEXIT(lines 890 897) no Hoare annotation was computed. [2020-07-20 13:04:12,310 INFO L264 CegarLoopResult]: At program point startSystemENTRY(lines 890 897) the Hoare annotation is: (let ((.cse0 (<= 1 ~systemActive~0)) (.cse1 (not (<= 1 |old(~systemActive~0)|)))) (and (or (not (<= 1 ~waterLevel~0)) (not (= 0 ~pumpRunning~0)) .cse0 .cse1) (or (not (<= 2 ~waterLevel~0)) .cse0 .cse1))) [2020-07-20 13:04:12,310 INFO L268 CegarLoopResult]: For program point startSystemFINAL(lines 890 897) no Hoare annotation was computed. [2020-07-20 13:04:12,310 INFO L268 CegarLoopResult]: For program point L737(lines 737 745) no Hoare annotation was computed. [2020-07-20 13:04:12,311 INFO L264 CegarLoopResult]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 729 753) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0)) [2020-07-20 13:04:12,311 INFO L264 CegarLoopResult]: At program point L735(line 735) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0)) [2020-07-20 13:04:12,311 INFO L268 CegarLoopResult]: For program point L735-1(line 735) no Hoare annotation was computed. [2020-07-20 13:04:12,311 INFO L268 CegarLoopResult]: For program point L733(lines 733 750) no Hoare annotation was computed. [2020-07-20 13:04:12,311 INFO L268 CegarLoopResult]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 729 753) no Hoare annotation was computed. [2020-07-20 13:04:12,311 INFO L264 CegarLoopResult]: At program point L748(line 748) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|))) [2020-07-20 13:04:12,311 INFO L268 CegarLoopResult]: For program point L748-1(lines 729 753) no Hoare annotation was computed. [2020-07-20 13:04:12,312 INFO L264 CegarLoopResult]: At program point L743(line 743) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 processEnvironment__wrappee__highWaterSensor_~tmp~5) (= 0 ~pumpRunning~0))) [2020-07-20 13:04:12,312 INFO L264 CegarLoopResult]: At program point L739(line 739) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (and (<= 2 ~waterLevel~0) (= 0 ~pumpRunning~0)) (not (= 0 |old(~pumpRunning~0)|))) [2020-07-20 13:04:12,312 INFO L268 CegarLoopResult]: For program point waterRiseEXIT(lines 602 613) no Hoare annotation was computed. [2020-07-20 13:04:12,312 INFO L268 CegarLoopResult]: For program point L606-1(lines 602 613) no Hoare annotation was computed. [2020-07-20 13:04:12,312 INFO L264 CegarLoopResult]: At program point waterRiseENTRY(lines 602 613) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~systemActive~0))) (.cse1 (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0)))) (and (or .cse0 (not (= 0 ~pumpRunning~0)) (not (<= 1 |old(~waterLevel~0)|)) .cse1) (or .cse0 (not (<= 2 |old(~waterLevel~0)|)) .cse1))) [2020-07-20 13:04:12,312 INFO L268 CegarLoopResult]: For program point __automaton_failFINAL(lines 539 546) no Hoare annotation was computed. [2020-07-20 13:04:12,312 INFO L268 CegarLoopResult]: For program point __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION(line 543) no Hoare annotation was computed. [2020-07-20 13:04:12,313 INFO L271 CegarLoopResult]: At program point __automaton_failENTRY(lines 539 546) the Hoare annotation is: true [2020-07-20 13:04:12,313 INFO L268 CegarLoopResult]: For program point __automaton_failEXIT(lines 539 546) no Hoare annotation was computed. [2020-07-20 13:04:12,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:04:12 BoogieIcfgContainer [2020-07-20 13:04:12,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:04:12,351 INFO L168 Benchmark]: Toolchain (without parser) took 21437.58 ms. Allocated memory was 145.8 MB in the beginning and 403.7 MB in the end (delta: 257.9 MB). Free memory was 102.2 MB in the beginning and 87.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 272.7 MB. Max. memory is 7.1 GB. [2020-07-20 13:04:12,352 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 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. [2020-07-20 13:04:12,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.51 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 169.9 MB in the end (delta: -68.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-07-20 13:04:12,358 INFO L168 Benchmark]: Boogie Preprocessor took 132.19 ms. Allocated memory is still 203.4 MB. Free memory was 169.9 MB in the beginning and 163.7 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:04:12,359 INFO L168 Benchmark]: RCFGBuilder took 1170.92 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 163.7 MB in the beginning and 189.4 MB in the end (delta: -25.7 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:04:12,360 INFO L168 Benchmark]: TraceAbstraction took 19511.98 ms. Allocated memory was 235.4 MB in the beginning and 403.7 MB in the end (delta: 168.3 MB). Free memory was 188.0 MB in the beginning and 87.8 MB in the end (delta: 100.3 MB). Peak memory consumption was 268.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:04:12,368 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 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 615.51 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 169.9 MB in the end (delta: -68.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.19 ms. Allocated memory is still 203.4 MB. Free memory was 169.9 MB in the beginning and 163.7 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1170.92 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 163.7 MB in the beginning and 189.4 MB in the end (delta: -25.7 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19511.98 ms. Allocated memory was 235.4 MB in the beginning and 403.7 MB in the end (delta: 168.3 MB). Free memory was 188.0 MB in the beginning and 87.8 MB in the end (delta: 100.3 MB). Peak memory consumption was 268.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 543]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 908]: Loop Invariant Derived loop invariant: ((!(\old(waterLevel) <= 1) || !(0 == \old(pumpRunning))) || !(1 <= \old(waterLevel))) || !(1 <= \old(systemActive)) - InvariantResult [Line: 447]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 437]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 909]: Loop Invariant Derived loop invariant: ((((!(\old(waterLevel) <= 1) || (((1 <= waterLevel && 0 == pumpRunning) && splverifierCounter <= 0) && 1 <= systemActive)) || !(0 == \old(pumpRunning))) || ((2 <= waterLevel && splverifierCounter <= 0) && 1 <= systemActive)) || !(1 <= \old(waterLevel))) || !(1 <= \old(systemActive)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1800 SDtfs, 2055 SDslu, 3124 SDs, 0 SdLazy, 3405 SolverSat, 1279 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1541 GetRequests, 1457 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=999occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 513 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 60 LocationsWithAnnotation, 1560 PreInvPairs, 1615 NumberOfFragments, 1031 HoareAnnotationTreeSize, 1560 FomulaSimplifications, 4855 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 60 FomulaSimplificationsInter, 7127 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1189 NumberOfCodeBlocks, 934 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1498 ConstructedInterpolants, 0 QuantifiedInterpolants, 352332 SizeOfPredicates, 40 NumberOfNonLiveVariables, 8216 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 373/425 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 correct! Received shutdown request...