/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:03:31,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:03:31,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:03:31,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:03:31,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:03:31,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:03:31,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:03:31,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:03:31,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:03:31,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:03:31,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:03:31,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:03:31,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:03:31,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:03:31,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:03:31,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:03:31,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:03:31,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:03:31,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:03:31,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:03:31,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:03:31,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:03:31,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:03:31,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:03:31,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:03:31,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:03:31,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:03:31,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:03:31,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:03:31,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:03:31,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:03:31,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:03:31,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:03:31,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:03:31,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:03:31,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:03:31,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:03:31,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:03:31,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:03:31,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:03:31,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:03:31,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 13:03:31,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:03:31,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:03:31,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:03:31,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:03:31,362 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:03:31,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:03:31,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:03:31,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:03:31,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:03:31,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:03:31,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:03:31,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:03:31,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:03:31,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:03:31,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:03:31,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:03:31,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:03:31,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:03:31,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:03:31,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:03:31,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:03:31,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:03:31,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:03:31,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:03:31,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:03:31,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:03:31,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:31,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:03:31,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:03:31,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:03:31,652 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:03:31,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:03:31,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:03:31,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:03:31,669 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:03:31,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-07-20 13:03:31,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfde9b55d/ca68ae20df0d48d9941ea12154705b06/FLAGa55bf85ae [2020-07-20 13:03:32,336 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:03:32,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-07-20 13:03:32,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfde9b55d/ca68ae20df0d48d9941ea12154705b06/FLAGa55bf85ae [2020-07-20 13:03:32,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfde9b55d/ca68ae20df0d48d9941ea12154705b06 [2020-07-20 13:03:32,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:03:32,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:03:32,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:03:32,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:03:32,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:03:32,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:03:32" (1/1) ... [2020-07-20 13:03:32,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395c8a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:32, skipping insertion in model container [2020-07-20 13:03:32,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:03:32" (1/1) ... [2020-07-20 13:03:32,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:03:32,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:03:33,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:03:33,132 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:03:33,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:03:33,263 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:03:33,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:33 WrapperNode [2020-07-20 13:03:33,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:03:33,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:03:33,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:03:33,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:03:33,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:33" (1/1) ... [2020-07-20 13:03:33,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:33" (1/1) ... [2020-07-20 13:03:33,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:33" (1/1) ... [2020-07-20 13:03:33,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:33" (1/1) ... [2020-07-20 13:03:33,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:33" (1/1) ... [2020-07-20 13:03:33,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:33" (1/1) ... [2020-07-20 13:03:33,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:33" (1/1) ... [2020-07-20 13:03:33,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:03:33,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:03:33,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:03:33,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:03:33,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:03:33,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:03:33,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:03:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 13:03:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 13:03:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 13:03:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 13:03:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 13:03:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 13:03:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 13:03:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 13:03:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 13:03:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 13:03:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 13:03:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 13:03:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 13:03:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 13:03:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 13:03:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 13:03:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 13:03:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:03:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 13:03:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 13:03:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 13:03:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 13:03:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 13:03:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 13:03:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 13:03:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 13:03:33,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 13:03:33,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 13:03:33,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 13:03:33,426 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 13:03:33,426 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 13:03:33,426 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 13:03:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 13:03:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 13:03:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 13:03:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 13:03:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-20 13:03:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:03:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:03:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 13:03:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 13:03:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 13:03:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 13:03:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 13:03:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 13:03:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 13:03:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 13:03:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 13:03:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 13:03:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 13:03:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 13:03:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 13:03:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 13:03:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 13:03:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 13:03:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-20 13:03:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 13:03:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 13:03:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 13:03:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 13:03:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:03:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 13:03:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 13:03:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 13:03:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 13:03:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 13:03:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 13:03:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:03:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 13:03:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 13:03:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 13:03:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:03:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:03:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 13:03:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:03:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:03:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:03:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:03:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 13:03:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:03:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 13:03:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 13:03:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:03:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 13:03:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 13:03:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 13:03:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 13:03:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:03:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 13:03:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:03:34,466 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:03:34,466 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 13:03:34,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:03:34 BoogieIcfgContainer [2020-07-20 13:03:34,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:03:34,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:03:34,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:03:34,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:03:34,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:03:32" (1/3) ... [2020-07-20 13:03:34,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b4d3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:03:34, skipping insertion in model container [2020-07-20 13:03:34,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:03:33" (2/3) ... [2020-07-20 13:03:34,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b4d3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:03:34, skipping insertion in model container [2020-07-20 13:03:34,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:03:34" (3/3) ... [2020-07-20 13:03:34,485 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2020-07-20 13:03:34,496 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:03:34,506 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:03:34,521 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:03:34,551 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:03:34,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:03:34,551 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:03:34,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:03:34,552 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:03:34,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:03:34,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:03:34,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:03:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-07-20 13:03:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 13:03:34,580 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:34,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:34,581 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:34,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:34,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1806854140, now seen corresponding path program 1 times [2020-07-20 13:03:34,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:34,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122748347] [2020-07-20 13:03:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:35,131 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:35,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:35,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:03:35,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:35,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:35,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122748347] [2020-07-20 13:03:35,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:35,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:03:35,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640706] [2020-07-20 13:03:35,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:03:35,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:35,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:03:35,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:03:35,215 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 2 states. [2020-07-20 13:03:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:35,258 INFO L93 Difference]: Finished difference Result 236 states and 291 transitions. [2020-07-20 13:03:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:03:35,260 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 13:03:35,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:35,273 INFO L225 Difference]: With dead ends: 236 [2020-07-20 13:03:35,273 INFO L226 Difference]: Without dead ends: 118 [2020-07-20 13:03:35,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:03:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-20 13:03:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-20 13:03:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-20 13:03:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-07-20 13:03:35,334 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-07-20 13:03:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:35,335 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-07-20 13:03:35,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:03:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-07-20 13:03:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 13:03:35,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:35,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:35,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:35,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:35,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:35,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1793827304, now seen corresponding path program 1 times [2020-07-20 13:03:35,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:35,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908057429] [2020-07-20 13:03:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:35,999 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:35,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:36,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 13:03:36,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:36,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:36,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908057429] [2020-07-20 13:03:36,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:36,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:03:36,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772211221] [2020-07-20 13:03:36,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:03:36,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:36,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:03:36,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:36,055 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 3 states. [2020-07-20 13:03:36,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:36,088 INFO L93 Difference]: Finished difference Result 172 states and 199 transitions. [2020-07-20 13:03:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:03:36,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 13:03:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:36,096 INFO L225 Difference]: With dead ends: 172 [2020-07-20 13:03:36,096 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 13:03:36,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 13:03:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-20 13:03:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-20 13:03:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-07-20 13:03:36,122 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-07-20 13:03:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:36,123 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-07-20 13:03:36,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:03:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-07-20 13:03:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 13:03:36,129 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:36,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:36,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:36,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:36,333 INFO L82 PathProgramCache]: Analyzing trace with hash 25908157, now seen corresponding path program 1 times [2020-07-20 13:03:36,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:36,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875499633] [2020-07-20 13:03:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:36,739 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:03:36,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:36,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 13:03:36,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:36,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:36,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875499633] [2020-07-20 13:03:36,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:36,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:03:36,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056416258] [2020-07-20 13:03:36,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:03:36,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:36,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:03:36,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:36,779 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 3 states. [2020-07-20 13:03:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:36,806 INFO L93 Difference]: Finished difference Result 275 states and 326 transitions. [2020-07-20 13:03:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:03:36,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 13:03:36,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:36,810 INFO L225 Difference]: With dead ends: 275 [2020-07-20 13:03:36,810 INFO L226 Difference]: Without dead ends: 190 [2020-07-20 13:03:36,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:36,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-20 13:03:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2020-07-20 13:03:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-07-20 13:03:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2020-07-20 13:03:36,834 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 52 [2020-07-20 13:03:36,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:36,835 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2020-07-20 13:03:36,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:03:36,835 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2020-07-20 13:03:36,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 13:03:36,837 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:36,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:37,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:37,054 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:37,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:37,055 INFO L82 PathProgramCache]: Analyzing trace with hash -388118307, now seen corresponding path program 1 times [2020-07-20 13:03:37,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:37,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542413442] [2020-07-20 13:03:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:37,509 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:03:37,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:37,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 13:03:37,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:37,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:37,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542413442] [2020-07-20 13:03:37,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:37,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:03:37,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179273341] [2020-07-20 13:03:37,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:03:37,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:37,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:03:37,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:03:37,578 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand 6 states. [2020-07-20 13:03:37,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:37,794 INFO L93 Difference]: Finished difference Result 467 states and 581 transitions. [2020-07-20 13:03:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:03:37,795 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 13:03:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:37,799 INFO L225 Difference]: With dead ends: 467 [2020-07-20 13:03:37,799 INFO L226 Difference]: Without dead ends: 313 [2020-07-20 13:03:37,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 13:03:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-07-20 13:03:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2020-07-20 13:03:37,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-07-20 13:03:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 384 transitions. [2020-07-20 13:03:37,829 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 384 transitions. Word has length 57 [2020-07-20 13:03:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:37,830 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 384 transitions. [2020-07-20 13:03:37,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:03:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 384 transitions. [2020-07-20 13:03:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-20 13:03:37,832 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:37,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:38,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:38,047 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:38,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1713773635, now seen corresponding path program 1 times [2020-07-20 13:03:38,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:38,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859404550] [2020-07-20 13:03:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:38,441 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:38,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:38,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 13:03:38,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:38,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:38,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859404550] [2020-07-20 13:03:38,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:38,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:03:38,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538317903] [2020-07-20 13:03:38,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:03:38,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:38,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:03:38,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:38,468 INFO L87 Difference]: Start difference. First operand 313 states and 384 transitions. Second operand 3 states. [2020-07-20 13:03:38,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:38,548 INFO L93 Difference]: Finished difference Result 771 states and 993 transitions. [2020-07-20 13:03:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:03:38,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-07-20 13:03:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:38,557 INFO L225 Difference]: With dead ends: 771 [2020-07-20 13:03:38,558 INFO L226 Difference]: Without dead ends: 482 [2020-07-20 13:03:38,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:38,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-07-20 13:03:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 479. [2020-07-20 13:03:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-07-20 13:03:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 603 transitions. [2020-07-20 13:03:38,631 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 603 transitions. Word has length 61 [2020-07-20 13:03:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:38,632 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 603 transitions. [2020-07-20 13:03:38,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:03:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 603 transitions. [2020-07-20 13:03:38,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-07-20 13:03:38,634 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:38,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:38,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:38,839 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:38,840 INFO L82 PathProgramCache]: Analyzing trace with hash -2042706554, now seen corresponding path program 1 times [2020-07-20 13:03:38,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:38,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079347617] [2020-07-20 13:03:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:39,209 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:39,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:39,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 13:03:39,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 13:03:39,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:39,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079347617] [2020-07-20 13:03:39,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:39,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:03:39,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223061336] [2020-07-20 13:03:39,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:03:39,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:39,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:03:39,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:03:39,256 INFO L87 Difference]: Start difference. First operand 479 states and 603 transitions. Second operand 5 states. [2020-07-20 13:03:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:39,289 INFO L93 Difference]: Finished difference Result 948 states and 1234 transitions. [2020-07-20 13:03:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 13:03:39,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-07-20 13:03:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:39,294 INFO L225 Difference]: With dead ends: 948 [2020-07-20 13:03:39,294 INFO L226 Difference]: Without dead ends: 493 [2020-07-20 13:03:39,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:03:39,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-07-20 13:03:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2020-07-20 13:03:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-07-20 13:03:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 615 transitions. [2020-07-20 13:03:39,324 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 615 transitions. Word has length 108 [2020-07-20 13:03:39,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:39,325 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 615 transitions. [2020-07-20 13:03:39,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:03:39,325 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 615 transitions. [2020-07-20 13:03:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-07-20 13:03:39,327 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:39,327 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:39,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:39,543 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:39,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2083381304, now seen corresponding path program 1 times [2020-07-20 13:03:39,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:39,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305514286] [2020-07-20 13:03:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:39,951 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:39,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:39,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:03:39,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 13:03:39,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:39,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305514286] [2020-07-20 13:03:39,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:39,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:03:39,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982358172] [2020-07-20 13:03:39,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:03:39,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:39,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:03:39,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:39,998 INFO L87 Difference]: Start difference. First operand 493 states and 615 transitions. Second operand 3 states. [2020-07-20 13:03:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:40,067 INFO L93 Difference]: Finished difference Result 831 states and 1040 transitions. [2020-07-20 13:03:40,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:03:40,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-07-20 13:03:40,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:40,070 INFO L225 Difference]: With dead ends: 831 [2020-07-20 13:03:40,071 INFO L226 Difference]: Without dead ends: 362 [2020-07-20 13:03:40,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:03:40,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-07-20 13:03:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 349. [2020-07-20 13:03:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-07-20 13:03:40,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 425 transitions. [2020-07-20 13:03:40,091 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 425 transitions. Word has length 108 [2020-07-20 13:03:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:40,092 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 425 transitions. [2020-07-20 13:03:40,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:03:40,092 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 425 transitions. [2020-07-20 13:03:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-20 13:03:40,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:40,094 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:40,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:40,305 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:40,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:40,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1698160131, now seen corresponding path program 1 times [2020-07-20 13:03:40,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:40,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695406057] [2020-07-20 13:03:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:40,680 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:40,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:40,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:03:40,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 13:03:40,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:40,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695406057] [2020-07-20 13:03:40,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:40,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:03:40,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809877285] [2020-07-20 13:03:40,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:03:40,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:40,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:03:40,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:03:40,729 INFO L87 Difference]: Start difference. First operand 349 states and 425 transitions. Second operand 6 states. [2020-07-20 13:03:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:40,767 INFO L93 Difference]: Finished difference Result 675 states and 839 transitions. [2020-07-20 13:03:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:03:40,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-07-20 13:03:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:40,770 INFO L225 Difference]: With dead ends: 675 [2020-07-20 13:03:40,771 INFO L226 Difference]: Without dead ends: 350 [2020-07-20 13:03:40,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:03:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-07-20 13:03:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2020-07-20 13:03:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-07-20 13:03:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 424 transitions. [2020-07-20 13:03:40,789 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 424 transitions. Word has length 111 [2020-07-20 13:03:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:40,789 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 424 transitions. [2020-07-20 13:03:40,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:03:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 424 transitions. [2020-07-20 13:03:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-20 13:03:40,791 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:40,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:41,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:41,006 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:41,007 INFO L82 PathProgramCache]: Analyzing trace with hash -26746336, now seen corresponding path program 1 times [2020-07-20 13:03:41,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:41,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772606733] [2020-07-20 13:03:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:41,301 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:03:41,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:41,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 13:03:41,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:41,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:03:41,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772606733] [2020-07-20 13:03:41,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:03:41,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:03:41,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809289410] [2020-07-20 13:03:41,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:03:41,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:41,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:03:41,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:03:41,379 INFO L87 Difference]: Start difference. First operand 350 states and 424 transitions. Second operand 6 states. [2020-07-20 13:03:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:42,211 INFO L93 Difference]: Finished difference Result 975 states and 1247 transitions. [2020-07-20 13:03:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:03:42,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-07-20 13:03:42,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:42,223 INFO L225 Difference]: With dead ends: 975 [2020-07-20 13:03:42,223 INFO L226 Difference]: Without dead ends: 649 [2020-07-20 13:03:42,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:03:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-07-20 13:03:42,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 620. [2020-07-20 13:03:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-07-20 13:03:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 755 transitions. [2020-07-20 13:03:42,263 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 755 transitions. Word has length 111 [2020-07-20 13:03:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:42,264 INFO L479 AbstractCegarLoop]: Abstraction has 620 states and 755 transitions. [2020-07-20 13:03:42,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:03:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 755 transitions. [2020-07-20 13:03:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-07-20 13:03:42,270 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:42,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:42,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:42,485 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:42,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:42,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1415201690, now seen corresponding path program 1 times [2020-07-20 13:03:42,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:42,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482583214] [2020-07-20 13:03:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:42,838 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:03:42,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:03:42,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:03:42,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:03:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:03:42,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:03:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 13:03:43,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482583214] [2020-07-20 13:03:43,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:03:43,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-20 13:03:43,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992985831] [2020-07-20 13:03:43,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 13:03:43,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:03:43,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 13:03:43,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 13:03:43,220 INFO L87 Difference]: Start difference. First operand 620 states and 755 transitions. Second operand 12 states. [2020-07-20 13:03:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:03:44,555 INFO L93 Difference]: Finished difference Result 1681 states and 2225 transitions. [2020-07-20 13:03:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 13:03:44,556 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-07-20 13:03:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:03:44,564 INFO L225 Difference]: With dead ends: 1681 [2020-07-20 13:03:44,564 INFO L226 Difference]: Without dead ends: 1085 [2020-07-20 13:03:44,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 218 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-07-20 13:03:44,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-07-20 13:03:44,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 821. [2020-07-20 13:03:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-07-20 13:03:44,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1000 transitions. [2020-07-20 13:03:44,621 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1000 transitions. Word has length 115 [2020-07-20 13:03:44,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:03:44,622 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1000 transitions. [2020-07-20 13:03:44,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 13:03:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1000 transitions. [2020-07-20 13:03:44,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-20 13:03:44,627 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:03:44,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:03:44,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:44,843 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:03:44,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:03:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash 59332245, now seen corresponding path program 2 times [2020-07-20 13:03:44,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:03:44,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290629709] [2020-07-20 13:03:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:45,262 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:03:45,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:03:45,262 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:03:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:03:45,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:03:45,695 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:03:45,695 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:03:45,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:03:46,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:03:46 BoogieIcfgContainer [2020-07-20 13:03:46,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:03:46,113 INFO L168 Benchmark]: Toolchain (without parser) took 13529.01 ms. Allocated memory was 143.1 MB in the beginning and 379.1 MB in the end (delta: 235.9 MB). Free memory was 99.5 MB in the beginning and 252.0 MB in the end (delta: -152.5 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:03:46,114 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:03:46,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.58 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 99.1 MB in the beginning and 168.5 MB in the end (delta: -69.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:03:46,119 INFO L168 Benchmark]: Boogie Preprocessor took 91.78 ms. Allocated memory is still 200.3 MB. Free memory was 168.5 MB in the beginning and 164.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:03:46,121 INFO L168 Benchmark]: RCFGBuilder took 1113.24 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 164.3 MB in the beginning and 195.8 MB in the end (delta: -31.5 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:03:46,124 INFO L168 Benchmark]: TraceAbstraction took 11633.64 ms. Allocated memory was 229.1 MB in the beginning and 379.1 MB in the end (delta: 149.9 MB). Free memory was 195.8 MB in the beginning and 252.0 MB in the end (delta: -56.2 MB). Peak memory consumption was 93.7 MB. Max. memory is 7.1 GB. [2020-07-20 13:03:46,130 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.58 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 99.1 MB in the beginning and 168.5 MB in the end (delta: -69.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.78 ms. Allocated memory is still 200.3 MB. Free memory was 168.5 MB in the beginning and 164.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1113.24 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 164.3 MB in the beginning and 195.8 MB in the end (delta: -31.5 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11633.64 ms. Allocated memory was 229.1 MB in the beginning and 379.1 MB in the end (delta: 149.9 MB). Free memory was 195.8 MB in the beginning and 252.0 MB in the end (delta: -56.2 MB). Peak memory consumption was 93.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 437]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L299] int cleanupTimeShifts = 4; [L611] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L809] int waterLevel = 1; [L810] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=76, \old(head)=33, \old(head)=26, \old(methaneLevelCritical)=71, \old(pumpRunning)=62, \old(systemActive)=46, \old(waterLevel)=27, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L375] int retValue_acc ; [L376] 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] [L380] 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] [L381] 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] [L382] 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] [L424] int retValue_acc ; [L427] retValue_acc = 1 [L428] 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] [L382] 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] [L382] tmp = valid_product() [L384] 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] [L386] 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] [L387] 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] [L366] 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] [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] 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] [L56] 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] [L58] 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] [L64] tmp = __VERIFIER_nondet_int() [L66] 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] [L68] 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] [L827] COND TRUE waterLevel < 2 [L828] 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] [L68] 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] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L103] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L131] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L138] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L160] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L163] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L257] int retValue_acc ; [L258] int tmp ; [L259] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L263] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L889] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L892] COND FALSE !(waterLevel < 2) [L896] retValue_acc = 0 [L897] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L263] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L263] tmp = isHighWaterSensorDry() [L265] COND FALSE !(\read(tmp)) [L268] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L270] retValue_acc = tmp___0 [L271] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L165] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L169] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L188] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L169] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L140] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L146] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L904] int tmp ; [L905] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L909] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L909] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L146] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L103] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L56] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L58] 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=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L103] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L131] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L133] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L138] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L140] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L160] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L178] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L140] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L146] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L904] int tmp ; [L905] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L909] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L909] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=1, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L146] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L103] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L56] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L58] 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=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L103] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L131] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L133] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L138] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L140] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L160] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L163] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L178] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L140] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L146] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L904] int tmp ; [L905] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L909] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L909] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, getWaterLevel()=0, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L909] tmp = getWaterLevel() [L911] COND TRUE tmp == 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L913] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L212] int retValue_acc ; [L215] retValue_acc = pumpRunning [L216] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L913] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L913] tmp___0 = isPumpRunning() [L915] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=0] [L917] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L437] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1459 SDtfs, 849 SDslu, 2185 SDs, 0 SdLazy, 1443 SolverSat, 394 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 942 GetRequests, 892 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=821occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 321 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 967 NumberOfCodeBlocks, 825 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 920 ConstructedInterpolants, 0 QuantifiedInterpolants, 140510 SizeOfPredicates, 29 NumberOfNonLiveVariables, 7053 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 127/140 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...