/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_spec1_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:00:59,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:00:59,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:00:59,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:00:59,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:00:59,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:00:59,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:00:59,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:00:59,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:00:59,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:00:59,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:00:59,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:00:59,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:00:59,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:00:59,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:00:59,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:00:59,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:00:59,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:00:59,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:00:59,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:00:59,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:00:59,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:00:59,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:00:59,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:00:59,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:00:59,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:00:59,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:00:59,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:00:59,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:00:59,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:00:59,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:00:59,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:00:59,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:00:59,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:00:59,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:00:59,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:00:59,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:00:59,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:00:59,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:00:59,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:00:59,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:00:59,392 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 13:00:59,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:00:59,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:00:59,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:00:59,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:00:59,408 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:00:59,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:00:59,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:00:59,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:00:59,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:00:59,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:00:59,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:00:59,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:00:59,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:00:59,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:00:59,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:00:59,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:00:59,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:00:59,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:00:59,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:00:59,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:00:59,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:00:59,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:00:59,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:00:59,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:00:59,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:00:59,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:00:59,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:59,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:00:59,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:00:59,413 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 13:00:59,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:00:59,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:00:59,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:00:59,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:00:59,713 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:00:59,714 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c [2020-07-20 13:00:59,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716c20c47/c0da9d509cb44a85abb77abf5e38ed0b/FLAGe09e464fa [2020-07-20 13:01:00,272 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:01:00,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c [2020-07-20 13:01:00,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716c20c47/c0da9d509cb44a85abb77abf5e38ed0b/FLAGe09e464fa [2020-07-20 13:01:00,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716c20c47/c0da9d509cb44a85abb77abf5e38ed0b [2020-07-20 13:01:00,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:01:00,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:01:00,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:01:00,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:01:00,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:01:00,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:01:00" (1/1) ... [2020-07-20 13:01:00,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b260048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:00, skipping insertion in model container [2020-07-20 13:01:00,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:01:00" (1/1) ... [2020-07-20 13:01:00,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:01:00,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:01:01,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:01:01,215 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:01:01,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:01:01,330 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:01:01,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01 WrapperNode [2020-07-20 13:01:01,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:01:01,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:01:01,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:01:01,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:01:01,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:01:01,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:01:01,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:01:01,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:01:01,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (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 13:01:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:01:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:01:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 13:01:01,553 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 13:01:01,553 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 13:01:01,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 13:01:01,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 13:01:01,555 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 13:01:01,555 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 13:01:01,555 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 13:01:01,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 13:01:01,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 13:01:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 13:01:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 13:01:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-20 13:01:01,558 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 13:01:01,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 13:01:01,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 13:01:01,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 13:01:01,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 13:01:01,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 13:01:01,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 13:01:01,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 13:01:01,559 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 13:01:01,560 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 13:01:01,560 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 13:01:01,561 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 13:01:01,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 13:01:01,562 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 13:01:01,562 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 13:01:01,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 13:01:01,562 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 13:01:01,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:01:01,562 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 13:01:01,563 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 13:01:01,563 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 13:01:01,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 13:01:01,563 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 13:01:01,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 13:01:01,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 13:01:01,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-20 13:01:01,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:01:01,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:01:01,564 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 13:01:01,564 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 13:01:01,565 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 13:01:01,565 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 13:01:01,565 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 13:01:01,566 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 13:01:01,566 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 13:01:01,566 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 13:01:01,566 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 13:01:01,566 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 13:01:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 13:01:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-20 13:01:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 13:01:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 13:01:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 13:01:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 13:01:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 13:01:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 13:01:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 13:01:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 13:01:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 13:01:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-20 13:01:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 13:01:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:01:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 13:01:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:01:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:01:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 13:01:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:01:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:01:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:01:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:01:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 13:01:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:01:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 13:01:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 13:01:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:01:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 13:01:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 13:01:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 13:01:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 13:01:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 13:01:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 13:01:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 13:01:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 13:01:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 13:01:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 13:01:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 13:01:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:01:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 13:01:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:01:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 13:01:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:01:02,729 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:01:02,730 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 13:01:02,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:01:02 BoogieIcfgContainer [2020-07-20 13:01:02,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:01:02,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:01:02,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:01:02,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:01:02,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:01:00" (1/3) ... [2020-07-20 13:01:02,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fcaaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:01:02, skipping insertion in model container [2020-07-20 13:01:02,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (2/3) ... [2020-07-20 13:01:02,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fcaaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:01:02, skipping insertion in model container [2020-07-20 13:01:02,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:01:02" (3/3) ... [2020-07-20 13:01:02,743 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2020-07-20 13:01:02,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:01:02,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:01:02,776 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:01:02,802 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:01:02,802 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:01:02,802 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:01:02,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:01:02,803 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:01:02,803 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:01:02,803 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:01:02,803 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:01:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-07-20 13:01:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 13:01:02,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:02,837 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 13:01:02,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:02,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:02,844 INFO L82 PathProgramCache]: Analyzing trace with hash -199381509, now seen corresponding path program 1 times [2020-07-20 13:01:02,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:02,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709147638] [2020-07-20 13:01:02,854 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 13:01:03,324 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:01:03,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:03,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:01:03,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:03,369 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 13:01:03,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:03,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709147638] [2020-07-20 13:01:03,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:03,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:01:03,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022297320] [2020-07-20 13:01:03,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:01:03,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:03,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:01:03,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:01:03,395 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 2 states. [2020-07-20 13:01:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:03,439 INFO L93 Difference]: Finished difference Result 268 states and 333 transitions. [2020-07-20 13:01:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:01:03,440 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 13:01:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:03,453 INFO L225 Difference]: With dead ends: 268 [2020-07-20 13:01:03,453 INFO L226 Difference]: Without dead ends: 134 [2020-07-20 13:01:03,458 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 13:01:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-07-20 13:01:03,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-07-20 13:01:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-20 13:01:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-07-20 13:01:03,516 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-07-20 13:01:03,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:03,517 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-07-20 13:01:03,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:01:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-07-20 13:01:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 13:01:03,521 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:03,521 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 13:01:03,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:03,736 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:03,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:03,737 INFO L82 PathProgramCache]: Analyzing trace with hash 822116352, now seen corresponding path program 1 times [2020-07-20 13:01:03,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:03,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496480775] [2020-07-20 13:01:03,739 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 13:01:04,268 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:01:04,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:04,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 13:01:04,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:04,314 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 13:01:04,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:04,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496480775] [2020-07-20 13:01:04,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:04,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:01:04,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429974546] [2020-07-20 13:01:04,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:01:04,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:04,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:01:04,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:01:04,325 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 3 states. [2020-07-20 13:01:04,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:04,365 INFO L93 Difference]: Finished difference Result 211 states and 247 transitions. [2020-07-20 13:01:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:01:04,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 13:01:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:04,372 INFO L225 Difference]: With dead ends: 211 [2020-07-20 13:01:04,372 INFO L226 Difference]: Without dead ends: 125 [2020-07-20 13:01:04,375 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 13:01:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-20 13:01:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-07-20 13:01:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-20 13:01:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-07-20 13:01:04,403 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-07-20 13:01:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:04,404 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-07-20 13:01:04,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:01:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-07-20 13:01:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 13:01:04,406 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:04,406 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] [2020-07-20 13:01:04,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:04,621 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:04,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:04,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1772796698, now seen corresponding path program 1 times [2020-07-20 13:01:04,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:04,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292969248] [2020-07-20 13:01:04,624 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 13:01:05,163 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:05,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:05,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 13:01:05,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:05,199 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 13:01:05,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:05,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292969248] [2020-07-20 13:01:05,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:05,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:01:05,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424910336] [2020-07-20 13:01:05,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:01:05,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:05,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:01:05,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:01:05,202 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 3 states. [2020-07-20 13:01:05,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:05,230 INFO L93 Difference]: Finished difference Result 325 states and 390 transitions. [2020-07-20 13:01:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:01:05,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 13:01:05,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:05,235 INFO L225 Difference]: With dead ends: 325 [2020-07-20 13:01:05,235 INFO L226 Difference]: Without dead ends: 224 [2020-07-20 13:01:05,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 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 13:01:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-07-20 13:01:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 220. [2020-07-20 13:01:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-07-20 13:01:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 263 transitions. [2020-07-20 13:01:05,261 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 263 transitions. Word has length 51 [2020-07-20 13:01:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:05,262 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 263 transitions. [2020-07-20 13:01:05,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:01:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 263 transitions. [2020-07-20 13:01:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 13:01:05,265 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:05,265 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] [2020-07-20 13:01:05,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:05,480 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:05,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1539786498, now seen corresponding path program 1 times [2020-07-20 13:01:05,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:05,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527925325] [2020-07-20 13:01:05,482 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 13:01:06,006 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:06,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:06,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 13:01:06,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:06,055 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 13:01:06,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:06,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527925325] [2020-07-20 13:01:06,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:06,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:01:06,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90197921] [2020-07-20 13:01:06,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:01:06,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:06,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:01:06,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:01:06,058 INFO L87 Difference]: Start difference. First operand 220 states and 263 transitions. Second operand 6 states. [2020-07-20 13:01:06,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:06,297 INFO L93 Difference]: Finished difference Result 601 states and 737 transitions. [2020-07-20 13:01:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:01:06,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 13:01:06,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:06,302 INFO L225 Difference]: With dead ends: 601 [2020-07-20 13:01:06,302 INFO L226 Difference]: Without dead ends: 405 [2020-07-20 13:01:06,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 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 13:01:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-07-20 13:01:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 401. [2020-07-20 13:01:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-07-20 13:01:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 484 transitions. [2020-07-20 13:01:06,343 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 484 transitions. Word has length 57 [2020-07-20 13:01:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:06,344 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 484 transitions. [2020-07-20 13:01:06,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:01:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 484 transitions. [2020-07-20 13:01:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-20 13:01:06,356 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:06,356 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] [2020-07-20 13:01:06,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:06,570 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:06,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:06,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1493126654, now seen corresponding path program 1 times [2020-07-20 13:01:06,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:06,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081281782] [2020-07-20 13:01:06,571 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 13:01:06,954 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:06,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:06,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:01:06,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:06,996 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 13:01:06,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:06,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081281782] [2020-07-20 13:01:06,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:06,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:01:06,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153726977] [2020-07-20 13:01:06,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:01:06,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:06,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:01:06,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:01:06,999 INFO L87 Difference]: Start difference. First operand 401 states and 484 transitions. Second operand 6 states. [2020-07-20 13:01:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:07,283 INFO L93 Difference]: Finished difference Result 978 states and 1234 transitions. [2020-07-20 13:01:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:01:07,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-07-20 13:01:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:07,289 INFO L225 Difference]: With dead ends: 978 [2020-07-20 13:01:07,289 INFO L226 Difference]: Without dead ends: 601 [2020-07-20 13:01:07,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 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 13:01:07,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-07-20 13:01:07,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 589. [2020-07-20 13:01:07,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-07-20 13:01:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 718 transitions. [2020-07-20 13:01:07,328 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 718 transitions. Word has length 61 [2020-07-20 13:01:07,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:07,329 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 718 transitions. [2020-07-20 13:01:07,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:01:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 718 transitions. [2020-07-20 13:01:07,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 13:01:07,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:07,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:01:07,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:07,547 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:07,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:07,548 INFO L82 PathProgramCache]: Analyzing trace with hash 807556796, now seen corresponding path program 1 times [2020-07-20 13:01:07,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:07,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54236900] [2020-07-20 13:01:07,549 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 13:01:07,876 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:07,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:07,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:01:07,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:07,929 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 13:01:07,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:07,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54236900] [2020-07-20 13:01:07,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:07,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:01:07,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550990668] [2020-07-20 13:01:07,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:01:07,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:07,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:01:07,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:01:07,932 INFO L87 Difference]: Start difference. First operand 589 states and 718 transitions. Second operand 6 states. [2020-07-20 13:01:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:07,993 INFO L93 Difference]: Finished difference Result 1174 states and 1460 transitions. [2020-07-20 13:01:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:01:07,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-07-20 13:01:07,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:07,998 INFO L225 Difference]: With dead ends: 1174 [2020-07-20 13:01:07,998 INFO L226 Difference]: Without dead ends: 609 [2020-07-20 13:01:08,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 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 13:01:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-07-20 13:01:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2020-07-20 13:01:08,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-07-20 13:01:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 738 transitions. [2020-07-20 13:01:08,035 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 738 transitions. Word has length 83 [2020-07-20 13:01:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:08,036 INFO L479 AbstractCegarLoop]: Abstraction has 609 states and 738 transitions. [2020-07-20 13:01:08,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:01:08,036 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 738 transitions. [2020-07-20 13:01:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 13:01:08,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:08,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:01:08,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:08,255 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:08,256 INFO L82 PathProgramCache]: Analyzing trace with hash 830189050, now seen corresponding path program 1 times [2020-07-20 13:01:08,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:08,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052989374] [2020-07-20 13:01:08,258 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 13:01:08,641 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:01:08,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:08,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 13:01:08,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:08,682 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 13:01:08,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:08,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052989374] [2020-07-20 13:01:08,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:08,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:01:08,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736974801] [2020-07-20 13:01:08,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:01:08,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:08,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:01:08,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:01:08,684 INFO L87 Difference]: Start difference. First operand 609 states and 738 transitions. Second operand 5 states. [2020-07-20 13:01:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:08,738 INFO L93 Difference]: Finished difference Result 1222 states and 1536 transitions. [2020-07-20 13:01:08,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 13:01:08,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-07-20 13:01:08,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:08,749 INFO L225 Difference]: With dead ends: 1222 [2020-07-20 13:01:08,750 INFO L226 Difference]: Without dead ends: 637 [2020-07-20 13:01:08,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 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 13:01:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-07-20 13:01:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 625. [2020-07-20 13:01:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-07-20 13:01:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 754 transitions. [2020-07-20 13:01:08,790 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 754 transitions. Word has length 83 [2020-07-20 13:01:08,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:08,791 INFO L479 AbstractCegarLoop]: Abstraction has 625 states and 754 transitions. [2020-07-20 13:01:08,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:01:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 754 transitions. [2020-07-20 13:01:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 13:01:08,793 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:08,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:01:09,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:09,008 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:09,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1855681049, now seen corresponding path program 1 times [2020-07-20 13:01:09,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:09,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115015700] [2020-07-20 13:01:09,010 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 13:01:09,299 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:01:09,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:09,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 13:01:09,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:09,326 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 13:01:09,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:09,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115015700] [2020-07-20 13:01:09,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:09,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:01:09,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660388845] [2020-07-20 13:01:09,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:01:09,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:09,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:01:09,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:01:09,329 INFO L87 Difference]: Start difference. First operand 625 states and 754 transitions. Second operand 3 states. [2020-07-20 13:01:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:09,391 INFO L93 Difference]: Finished difference Result 1743 states and 2234 transitions. [2020-07-20 13:01:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:01:09,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-07-20 13:01:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:09,399 INFO L225 Difference]: With dead ends: 1743 [2020-07-20 13:01:09,400 INFO L226 Difference]: Without dead ends: 1142 [2020-07-20 13:01:09,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 1 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 13:01:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2020-07-20 13:01:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1139. [2020-07-20 13:01:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-07-20 13:01:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1414 transitions. [2020-07-20 13:01:09,481 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1414 transitions. Word has length 83 [2020-07-20 13:01:09,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:09,482 INFO L479 AbstractCegarLoop]: Abstraction has 1139 states and 1414 transitions. [2020-07-20 13:01:09,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:01:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1414 transitions. [2020-07-20 13:01:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-20 13:01:09,486 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:09,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:01:09,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:09,700 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:09,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:09,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1308897473, now seen corresponding path program 1 times [2020-07-20 13:01:09,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:09,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188249387] [2020-07-20 13:01:09,702 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 13:01:10,118 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:10,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:01:10,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:01:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:01:10,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:01:10,476 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:01:10,476 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:01:10,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:10,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:01:10 BoogieIcfgContainer [2020-07-20 13:01:10,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:01:10,849 INFO L168 Benchmark]: Toolchain (without parser) took 10200.15 ms. Allocated memory was 138.9 MB in the beginning and 316.1 MB in the end (delta: 177.2 MB). Free memory was 102.6 MB in the beginning and 166.7 MB in the end (delta: -64.0 MB). Peak memory consumption was 113.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:01:10,850 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:01:10,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.13 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 170.5 MB in the end (delta: -68.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:01:10,852 INFO L168 Benchmark]: Boogie Preprocessor took 130.30 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 166.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:01:10,853 INFO L168 Benchmark]: RCFGBuilder took 1272.70 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 166.5 MB in the beginning and 194.3 MB in the end (delta: -27.9 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:01:10,853 INFO L168 Benchmark]: TraceAbstraction took 8110.52 ms. Allocated memory was 236.5 MB in the beginning and 316.1 MB in the end (delta: 79.7 MB). Free memory was 192.9 MB in the beginning and 166.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:01:10,857 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 680.13 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 170.5 MB in the end (delta: -68.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.30 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 166.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1272.70 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 166.5 MB in the beginning and 194.3 MB in the end (delta: -27.9 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8110.52 ms. Allocated memory was 236.5 MB in the beginning and 316.1 MB in the end (delta: 79.7 MB). Free memory was 192.9 MB in the beginning and 166.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 704]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L121] int pumpRunning = 0; [L122] int systemActive = 1; [L503] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L773] int cleanupTimeShifts = 4; [L870] int waterLevel = 1; [L871] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=64, \old(head)=53, \old(head)=29, \old(methaneLevelCritical)=76, \old(pumpRunning)=89, \old(systemActive)=36, \old(waterLevel)=34, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L846] int retValue_acc ; [L847] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L851] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L852] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L853] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L738] int retValue_acc ; [L741] retValue_acc = 1 [L742] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L853] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L853] tmp = valid_product() [L855] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L857] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L858] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L840] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L55] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L57] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L67] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L888] COND TRUE waterLevel < 2 [L889] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L67] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L77] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L900] COND FALSE !(\read(methaneLevelCritical)) [L903] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L77] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___2=-1, waterLevel=2] [L100] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L129] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L136] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L138] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L184] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L187] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L202] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L158] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L161] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L163] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L287] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L950] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L953] COND FALSE !(waterLevel < 2) [L957] retValue_acc = 0 [L958] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L287] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L163] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L163] tmp = isHighWaterLevel() [L165] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L167] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L212] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L167] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L202] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L138] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L144] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L748] int tmp ; [L749] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L753] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L909] int retValue_acc ; [L912] retValue_acc = methaneLevelCritical [L913] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L753] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L753] tmp = isMethaneLevelCritical() [L755] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L757] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L757] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L757] tmp___0 = isPumpRunning() [L759] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L761] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L704] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 241 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1298 SDtfs, 409 SDslu, 2368 SDs, 0 SdLazy, 195 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 508 GetRequests, 484 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=8, 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, 8 MinimizatonAttempts, 35 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 598 NumberOfCodeBlocks, 537 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 54373 SizeOfPredicates, 20 NumberOfNonLiveVariables, 5392 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...