/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:39:42,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:39:42,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:39:42,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:39:42,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:39:42,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:39:42,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:39:42,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:39:42,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:39:42,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:39:42,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:39:42,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:39:42,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:39:42,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:39:42,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:39:42,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:39:42,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:39:42,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:39:42,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:39:42,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:39:42,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:39:42,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:39:42,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:39:42,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:39:42,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:39:42,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:39:42,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:39:42,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:39:42,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:39:42,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:39:42,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:39:42,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:39:42,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:39:42,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:39:42,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:39:42,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:39:42,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:39:42,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:39:42,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:39:42,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:39:42,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:39:42,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 15:39:42,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:39:42,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:39:42,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:39:42,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:39:42,469 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:39:42,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:39:42,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:39:42,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:39:42,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:39:42,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:39:42,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:39:42,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:39:42,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:39:42,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:39:42,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:39:42,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:39:42,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:39:42,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:39:42,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:39:42,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:39:42,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:39:42,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:39:42,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:39:42,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:39:42,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:39:42,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:39:42,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:42,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:39:42,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:39:42,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:39:42,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:39:42,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:39:42,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:39:42,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:39:42,758 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:39:42,758 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-07-21 15:39:42,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0502f3ca3/a282845117b546b58c7e0867d5d2b5ed/FLAG69998491c [2020-07-21 15:39:43,314 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:39:43,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-07-21 15:39:43,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0502f3ca3/a282845117b546b58c7e0867d5d2b5ed/FLAG69998491c [2020-07-21 15:39:43,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0502f3ca3/a282845117b546b58c7e0867d5d2b5ed [2020-07-21 15:39:43,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:39:43,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:39:43,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:43,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:39:43,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:39:43,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:43" (1/1) ... [2020-07-21 15:39:43,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a81ee7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:43, skipping insertion in model container [2020-07-21 15:39:43,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:43" (1/1) ... [2020-07-21 15:39:43,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:39:43,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:39:44,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:44,189 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:39:44,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:44,305 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:39:44,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:44 WrapperNode [2020-07-21 15:39:44,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:44,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:39:44,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:39:44,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:39:44,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:44" (1/1) ... [2020-07-21 15:39:44,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:44" (1/1) ... [2020-07-21 15:39:44,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:44" (1/1) ... [2020-07-21 15:39:44,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:44" (1/1) ... [2020-07-21 15:39:44,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:44" (1/1) ... [2020-07-21 15:39:44,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:44" (1/1) ... [2020-07-21 15:39:44,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:44" (1/1) ... [2020-07-21 15:39:44,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:39:44,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:39:44,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:39:44,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:39:44,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:39:44,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:39:44,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:39:44,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:44,460 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:39:44,461 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:39:44,461 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 15:39:44,461 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:39:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:39:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:39:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:39:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:39:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:39:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 15:39:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 15:39:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 15:39:44,464 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:39:44,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:44,464 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:39:44,465 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:39:44,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:39:44,465 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:39:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:39:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:39:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:39:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:39:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:39:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:39:44,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:44,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:44,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:44,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:39:44,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:39:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:39:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:39:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:39:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:39:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:39:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:39:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:39:44,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 15:39:44,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:39:44,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:39:44,471 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:39:44,471 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:39:44,471 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:39:44,471 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:39:44,472 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 15:39:44,472 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:39:44,472 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:39:44,472 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:39:44,472 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:39:44,472 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:39:44,473 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 15:39:44,473 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 15:39:44,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:44,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:39:44,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:39:44,474 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 15:39:44,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 15:39:44,475 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:39:44,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:39:44,475 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:39:44,475 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:39:44,475 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:39:44,475 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:39:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:39:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:39:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:39:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:39:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:39:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:39:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:39:44,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:39:44,477 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:39:44,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:39:44,478 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:39:44,478 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:39:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:39:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:39:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:39:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:39:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:39:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:39:44,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:39:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:39:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:39:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:39:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:39:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:39:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:39:45,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:39:45,452 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:39:45,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:45 BoogieIcfgContainer [2020-07-21 15:39:45,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:39:45,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:39:45,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:39:45,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:39:45,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:39:43" (1/3) ... [2020-07-21 15:39:45,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc73717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:45, skipping insertion in model container [2020-07-21 15:39:45,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:44" (2/3) ... [2020-07-21 15:39:45,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc73717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:45, skipping insertion in model container [2020-07-21 15:39:45,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:45" (3/3) ... [2020-07-21 15:39:45,464 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2020-07-21 15:39:45,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:39:45,481 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:39:45,494 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:39:45,518 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:39:45,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:39:45,518 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:39:45,519 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:39:45,519 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:39:45,519 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:39:45,519 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:39:45,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:39:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-07-21 15:39:45,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 15:39:45,551 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:45,552 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] [2020-07-21 15:39:45,552 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:45,559 INFO L82 PathProgramCache]: Analyzing trace with hash -963613915, now seen corresponding path program 1 times [2020-07-21 15:39:45,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:45,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988543731] [2020-07-21 15:39:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:46,019 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:46,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:46,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:39:46,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:46,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:46,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988543731] [2020-07-21 15:39:46,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:46,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:39:46,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075003921] [2020-07-21 15:39:46,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:39:46,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:46,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:39:46,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:39:46,097 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 2 states. [2020-07-21 15:39:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:46,139 INFO L93 Difference]: Finished difference Result 266 states and 331 transitions. [2020-07-21 15:39:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:39:46,140 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 15:39:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:46,153 INFO L225 Difference]: With dead ends: 266 [2020-07-21 15:39:46,153 INFO L226 Difference]: Without dead ends: 133 [2020-07-21 15:39:46,158 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 [2020-07-21 15:39:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-21 15:39:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-07-21 15:39:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-07-21 15:39:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-07-21 15:39:46,213 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 46 [2020-07-21 15:39:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:46,213 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-07-21 15:39:46,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:39:46,214 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-07-21 15:39:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 15:39:46,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:46,217 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] [2020-07-21 15:39:46,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:46,432 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:46,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1539591980, now seen corresponding path program 1 times [2020-07-21 15:39:46,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:46,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284123725] [2020-07-21 15:39:46,434 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:46,760 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:46,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:46,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:39:46,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:46,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:46,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284123725] [2020-07-21 15:39:46,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:46,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:46,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929020510] [2020-07-21 15:39:46,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:46,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:46,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:46,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:46,811 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 3 states. [2020-07-21 15:39:46,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:46,833 INFO L93 Difference]: Finished difference Result 205 states and 241 transitions. [2020-07-21 15:39:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:46,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 15:39:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:46,836 INFO L225 Difference]: With dead ends: 205 [2020-07-21 15:39:46,836 INFO L226 Difference]: Without dead ends: 124 [2020-07-21 15:39:46,837 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 [2020-07-21 15:39:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-21 15:39:46,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-07-21 15:39:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-07-21 15:39:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-07-21 15:39:46,852 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 47 [2020-07-21 15:39:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:46,853 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-07-21 15:39:46,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-07-21 15:39:46,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 15:39:46,855 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:46,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:47,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:47,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:47,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:47,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1079098286, now seen corresponding path program 1 times [2020-07-21 15:39:47,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:47,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016283216] [2020-07-21 15:39:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:47,406 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:47,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:47,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 15:39:47,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:47,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:47,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016283216] [2020-07-21 15:39:47,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:47,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:47,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026880109] [2020-07-21 15:39:47,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:47,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:47,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:47,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:47,441 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 3 states. [2020-07-21 15:39:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:47,475 INFO L93 Difference]: Finished difference Result 320 states and 386 transitions. [2020-07-21 15:39:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:47,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 15:39:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:47,479 INFO L225 Difference]: With dead ends: 320 [2020-07-21 15:39:47,479 INFO L226 Difference]: Without dead ends: 220 [2020-07-21 15:39:47,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-07-21 15:39:47,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2020-07-21 15:39:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-07-21 15:39:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2020-07-21 15:39:47,509 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 52 [2020-07-21 15:39:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:47,509 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2020-07-21 15:39:47,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2020-07-21 15:39:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 15:39:47,512 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:47,513 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] [2020-07-21 15:39:47,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:47,727 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:47,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:47,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1051584563, now seen corresponding path program 1 times [2020-07-21 15:39:47,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:47,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865950515] [2020-07-21 15:39:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:48,026 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:48,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:48,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:48,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:48,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:48,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865950515] [2020-07-21 15:39:48,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:48,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:48,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152724537] [2020-07-21 15:39:48,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:48,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:48,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:48,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:48,082 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand 6 states. [2020-07-21 15:39:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:48,286 INFO L93 Difference]: Finished difference Result 518 states and 651 transitions. [2020-07-21 15:39:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:48,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 15:39:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:48,291 INFO L225 Difference]: With dead ends: 518 [2020-07-21 15:39:48,291 INFO L226 Difference]: Without dead ends: 328 [2020-07-21 15:39:48,293 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 [2020-07-21 15:39:48,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-07-21 15:39:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 318. [2020-07-21 15:39:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-07-21 15:39:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 385 transitions. [2020-07-21 15:39:48,327 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 385 transitions. Word has length 57 [2020-07-21 15:39:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:48,327 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 385 transitions. [2020-07-21 15:39:48,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 385 transitions. [2020-07-21 15:39:48,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-21 15:39:48,331 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:48,331 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] [2020-07-21 15:39:48,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:48,547 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:48,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:48,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1531515677, now seen corresponding path program 1 times [2020-07-21 15:39:48,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:48,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533692467] [2020-07-21 15:39:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:48,750 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:48,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:48,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 15:39:48,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:48,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:48,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533692467] [2020-07-21 15:39:48,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:48,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:39:48,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623767645] [2020-07-21 15:39:48,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:39:48,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:48,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:39:48,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:48,786 INFO L87 Difference]: Start difference. First operand 318 states and 385 transitions. Second operand 5 states. [2020-07-21 15:39:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:48,815 INFO L93 Difference]: Finished difference Result 626 states and 788 transitions. [2020-07-21 15:39:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:39:48,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-07-21 15:39:48,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:48,819 INFO L225 Difference]: With dead ends: 626 [2020-07-21 15:39:48,819 INFO L226 Difference]: Without dead ends: 332 [2020-07-21 15:39:48,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:48,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-07-21 15:39:48,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 326. [2020-07-21 15:39:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-07-21 15:39:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 393 transitions. [2020-07-21 15:39:48,845 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 393 transitions. Word has length 80 [2020-07-21 15:39:48,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:48,846 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 393 transitions. [2020-07-21 15:39:48,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:39:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 393 transitions. [2020-07-21 15:39:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-21 15:39:48,849 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:48,849 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] [2020-07-21 15:39:49,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:49,064 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:49,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1554147931, now seen corresponding path program 1 times [2020-07-21 15:39:49,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:49,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121657588] [2020-07-21 15:39:49,067 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-21 15:39:49,325 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:49,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:49,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 15:39:49,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:49,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:49,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121657588] [2020-07-21 15:39:49,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:49,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:49,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881543036] [2020-07-21 15:39:49,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:49,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:49,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:49,364 INFO L87 Difference]: Start difference. First operand 326 states and 393 transitions. Second operand 3 states. [2020-07-21 15:39:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:49,407 INFO L93 Difference]: Finished difference Result 906 states and 1175 transitions. [2020-07-21 15:39:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:49,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-07-21 15:39:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:49,416 INFO L225 Difference]: With dead ends: 906 [2020-07-21 15:39:49,418 INFO L226 Difference]: Without dead ends: 604 [2020-07-21 15:39:49,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:49,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-07-21 15:39:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 601. [2020-07-21 15:39:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-07-21 15:39:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 762 transitions. [2020-07-21 15:39:49,474 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 762 transitions. Word has length 80 [2020-07-21 15:39:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:49,475 INFO L479 AbstractCegarLoop]: Abstraction has 601 states and 762 transitions. [2020-07-21 15:39:49,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:49,475 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 762 transitions. [2020-07-21 15:39:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-21 15:39:49,477 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:49,477 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] [2020-07-21 15:39:49,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:49,691 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1917725864, now seen corresponding path program 1 times [2020-07-21 15:39:49,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:49,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493434872] [2020-07-21 15:39:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-21 15:39:50,035 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:50,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:50,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 15:39:50,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:50,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:50,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493434872] [2020-07-21 15:39:50,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:50,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:50,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478398393] [2020-07-21 15:39:50,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:50,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:50,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:50,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:50,103 INFO L87 Difference]: Start difference. First operand 601 states and 762 transitions. Second operand 6 states. [2020-07-21 15:39:51,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:51,096 INFO L93 Difference]: Finished difference Result 2049 states and 2786 transitions. [2020-07-21 15:39:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 15:39:51,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-07-21 15:39:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:51,133 INFO L225 Difference]: With dead ends: 2049 [2020-07-21 15:39:51,133 INFO L226 Difference]: Without dead ends: 1472 [2020-07-21 15:39:51,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 15:39:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-07-21 15:39:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1348. [2020-07-21 15:39:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1348 states. [2020-07-21 15:39:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1766 transitions. [2020-07-21 15:39:51,218 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1766 transitions. Word has length 84 [2020-07-21 15:39:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:51,219 INFO L479 AbstractCegarLoop]: Abstraction has 1348 states and 1766 transitions. [2020-07-21 15:39:51,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1766 transitions. [2020-07-21 15:39:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-21 15:39:51,221 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:51,221 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] [2020-07-21 15:39:51,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:51,435 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:51,436 INFO L82 PathProgramCache]: Analyzing trace with hash 506023678, now seen corresponding path program 1 times [2020-07-21 15:39:51,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:51,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842576967] [2020-07-21 15:39:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-21 15:39:51,674 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:51,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:51,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 15:39:51,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:51,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:51,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842576967] [2020-07-21 15:39:51,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:51,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:51,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265138151] [2020-07-21 15:39:51,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:51,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:51,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:51,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:51,713 INFO L87 Difference]: Start difference. First operand 1348 states and 1766 transitions. Second operand 6 states. [2020-07-21 15:39:51,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:51,979 INFO L93 Difference]: Finished difference Result 3913 states and 5350 transitions. [2020-07-21 15:39:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:51,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-07-21 15:39:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:51,998 INFO L225 Difference]: With dead ends: 3913 [2020-07-21 15:39:51,998 INFO L226 Difference]: Without dead ends: 2589 [2020-07-21 15:39:52,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:39:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2020-07-21 15:39:52,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2549. [2020-07-21 15:39:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2549 states. [2020-07-21 15:39:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3356 transitions. [2020-07-21 15:39:52,215 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3356 transitions. Word has length 80 [2020-07-21 15:39:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:52,216 INFO L479 AbstractCegarLoop]: Abstraction has 2549 states and 3356 transitions. [2020-07-21 15:39:52,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3356 transitions. [2020-07-21 15:39:52,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-21 15:39:52,219 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:52,219 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] [2020-07-21 15:39:52,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:52,422 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:52,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1762832698, now seen corresponding path program 1 times [2020-07-21 15:39:52,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:52,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674779951] [2020-07-21 15:39:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-21 15:39:52,697 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:52,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:52,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:52,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:52,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:52,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674779951] [2020-07-21 15:39:52,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:52,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:52,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289764990] [2020-07-21 15:39:52,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:52,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:52,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:52,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:52,728 INFO L87 Difference]: Start difference. First operand 2549 states and 3356 transitions. Second operand 6 states. [2020-07-21 15:39:52,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:52,848 INFO L93 Difference]: Finished difference Result 5114 states and 6856 transitions. [2020-07-21 15:39:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:39:52,849 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-07-21 15:39:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:52,870 INFO L225 Difference]: With dead ends: 5114 [2020-07-21 15:39:52,871 INFO L226 Difference]: Without dead ends: 2589 [2020-07-21 15:39:52,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:39:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2020-07-21 15:39:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2589. [2020-07-21 15:39:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2589 states. [2020-07-21 15:39:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3404 transitions. [2020-07-21 15:39:53,026 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3404 transitions. Word has length 84 [2020-07-21 15:39:53,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:53,027 INFO L479 AbstractCegarLoop]: Abstraction has 2589 states and 3404 transitions. [2020-07-21 15:39:53,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3404 transitions. [2020-07-21 15:39:53,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-21 15:39:53,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:53,030 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] [2020-07-21 15:39:53,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:53,244 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:53,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1785464952, now seen corresponding path program 1 times [2020-07-21 15:39:53,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:53,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332344995] [2020-07-21 15:39:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:53,450 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:53,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:53,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:39:53,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:53,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:53,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332344995] [2020-07-21 15:39:53,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:53,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:39:53,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132733872] [2020-07-21 15:39:53,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:39:53,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:53,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:39:53,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:53,486 INFO L87 Difference]: Start difference. First operand 2589 states and 3404 transitions. Second operand 5 states. [2020-07-21 15:39:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:53,583 INFO L93 Difference]: Finished difference Result 4898 states and 6612 transitions. [2020-07-21 15:39:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:39:53,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-07-21 15:39:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:53,598 INFO L225 Difference]: With dead ends: 4898 [2020-07-21 15:39:53,599 INFO L226 Difference]: Without dead ends: 2333 [2020-07-21 15:39:53,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2020-07-21 15:39:53,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2333. [2020-07-21 15:39:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2020-07-21 15:39:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 3000 transitions. [2020-07-21 15:39:53,719 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 3000 transitions. Word has length 84 [2020-07-21 15:39:53,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:53,720 INFO L479 AbstractCegarLoop]: Abstraction has 2333 states and 3000 transitions. [2020-07-21 15:39:53,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:39:53,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 3000 transitions. [2020-07-21 15:39:53,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-21 15:39:53,722 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:53,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:53,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:53,936 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:53,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1546032113, now seen corresponding path program 1 times [2020-07-21 15:39:53,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:53,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390448096] [2020-07-21 15:39:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:54,197 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:54,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:39:54,197 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:39:54,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:54,527 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:39:54,527 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:39:54,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:54,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:39:54 BoogieIcfgContainer [2020-07-21 15:39:54,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:39:54,908 INFO L168 Benchmark]: Toolchain (without parser) took 11242.87 ms. Allocated memory was 138.9 MB in the beginning and 361.8 MB in the end (delta: 222.8 MB). Free memory was 102.9 MB in the beginning and 303.4 MB in the end (delta: -200.6 MB). Peak memory consumption was 247.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:54,908 INFO L168 Benchmark]: CDTParser took 0.20 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: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 15:39:54,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.95 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 102.4 MB in the beginning and 171.8 MB in the end (delta: -69.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:54,910 INFO L168 Benchmark]: Boogie Preprocessor took 86.92 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 167.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:54,910 INFO L168 Benchmark]: RCFGBuilder took 1062.93 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 167.0 MB in the beginning and 196.2 MB in the end (delta: -29.2 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:54,911 INFO L168 Benchmark]: TraceAbstraction took 9447.60 ms. Allocated memory was 237.0 MB in the beginning and 361.8 MB in the end (delta: 124.8 MB). Free memory was 196.2 MB in the beginning and 303.4 MB in the end (delta: -107.2 MB). Peak memory consumption was 242.3 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:54,914 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.95 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 102.4 MB in the beginning and 171.8 MB in the end (delta: -69.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.92 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 167.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1062.93 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 167.0 MB in the beginning and 196.2 MB in the end (delta: -29.2 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9447.60 ms. Allocated memory was 237.0 MB in the beginning and 361.8 MB in the end (delta: 124.8 MB). Free memory was 196.2 MB in the beginning and 303.4 MB in the end (delta: -107.2 MB). Peak memory consumption was 242.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 490]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] int pumpRunning = 0; [L52] int systemActive = 1; [L352] int cleanupTimeShifts = 4; [L664] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L862] int waterLevel = 1; [L863] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=61, \old(head)=49, \old(head)=57, \old(methaneLevelCritical)=74, \old(pumpRunning)=54, \old(systemActive)=45, \old(waterLevel)=22, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L428] int retValue_acc ; [L429] 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] [L433] 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] [L434] 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] [L435] 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] [L477] int retValue_acc ; [L480] retValue_acc = 1 [L481] 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] [L435] 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] [L435] tmp = valid_product() [L437] 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] [L439] 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] [L440] 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] [L419] 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] [L257] int splverifierCounter ; [L258] int tmp ; [L259] int tmp___0 ; [L260] int tmp___1 ; [L261] int tmp___2 ; [L264] 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] [L266] 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] [L268] 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] [L274] tmp = __VERIFIER_nondet_int() [L276] 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] [L278] 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] [L880] COND TRUE waterLevel < 2 [L881] 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] [L278] 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] [L284] tmp___0 = __VERIFIER_nondet_int() [L286] 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] [L288] 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] [L892] COND FALSE !(\read(methaneLevelCritical)) [L895] 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] [L288] 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] [L294] tmp___2 = __VERIFIER_nondet_int() [L296] COND FALSE !(\read(tmp___2)) [L302] tmp___1 = __VERIFIER_nondet_int() [L304] COND FALSE !(\read(tmp___1)) 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___1=0, tmp___2=0, waterLevel=2] [L313] 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] [L59] 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] [L66] 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] [L68] 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] [L114] 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] [L117] 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] [L132] 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] [L88] 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] [L91] 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] [L93] 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] [L211] int retValue_acc ; [L212] int tmp ; [L213] 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] [L217] 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] [L942] 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] [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] 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] [L217] 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] [L217] tmp = isHighWaterSensorDry() [L219] COND FALSE !(\read(tmp)) [L222] 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] [L224] retValue_acc = tmp___0 [L225] 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] [L93] 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] [L93] tmp = isHighWaterLevel() [L95] 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] [L97] 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] [L142] 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] [L97] 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] [L132] 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] [L68] 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] [L74] 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] [L327] int tmp ; [L328] 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] [L332] 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] [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] 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] [L332] 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] [L332] tmp = isMethaneLevelCritical() [L334] 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] [L336] 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] [L166] int retValue_acc ; [L169] retValue_acc = pumpRunning [L170] 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] [L336] 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] [L336] tmp___0 = isPumpRunning() [L338] 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] [L340] 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] [L490] __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 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1626 SDtfs, 718 SDslu, 2914 SDs, 0 SdLazy, 769 SolverSat, 249 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 692 GetRequests, 657 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2589occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 189 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 782 NumberOfCodeBlocks, 700 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 684 ConstructedInterpolants, 0 QuantifiedInterpolants, 84442 SizeOfPredicates, 25 NumberOfNonLiveVariables, 6860 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...