/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:23:15,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:23:15,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:23:15,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:23:15,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:23:15,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:23:15,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:23:15,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:23:15,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:23:15,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:23:15,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:23:15,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:23:15,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:23:15,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:23:15,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:23:15,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:23:15,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:23:15,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:23:15,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:23:15,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:23:15,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:23:15,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:23:15,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:23:15,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:23:15,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:23:15,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:23:15,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:23:15,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:23:15,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:23:15,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 16:23:15,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 16:23:15,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 16:23:15,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 16:23:15,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 16:23:15,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 16:23:15,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 16:23:15,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 16:23:15,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 16:23:15,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:23:15,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:23:15,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:23:15,350 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 16:23:15,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:23:15,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:23:15,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:23:15,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:23:15,366 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:23:15,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:23:15,367 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:23:15,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:23:15,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:23:15,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:23:15,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:23:15,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:23:15,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:23:15,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:23:15,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:23:15,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:23:15,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:23:15,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:23:15,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:23:15,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:23:15,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:23:15,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:23:15,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:23:15,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:23:15,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:23:15,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:23:15,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:15,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:23:15,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:23:15,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 16:23:15,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:23:15,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:23:15,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:23:15,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:23:15,674 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:23:15,674 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-07-20 16:23:15,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a8b0c40/fb591567d188437c88a18d74cb217472/FLAG76979b95a [2020-07-20 16:23:16,281 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:23:16,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-07-20 16:23:16,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a8b0c40/fb591567d188437c88a18d74cb217472/FLAG76979b95a [2020-07-20 16:23:16,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a8b0c40/fb591567d188437c88a18d74cb217472 [2020-07-20 16:23:16,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:23:16,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:23:16,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:23:16,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:23:16,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:23:16,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:23:16" (1/1) ... [2020-07-20 16:23:16,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5d2c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:16, skipping insertion in model container [2020-07-20 16:23:16,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:23:16" (1/1) ... [2020-07-20 16:23:16,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:23:16,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:23:17,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:23:17,104 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:23:17,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:23:17,239 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:23:17,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:17 WrapperNode [2020-07-20 16:23:17,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:23:17,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:23:17,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:23:17,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:23:17,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:17" (1/1) ... [2020-07-20 16:23:17,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:17" (1/1) ... [2020-07-20 16:23:17,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:17" (1/1) ... [2020-07-20 16:23:17,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:17" (1/1) ... [2020-07-20 16:23:17,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:17" (1/1) ... [2020-07-20 16:23:17,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:17" (1/1) ... [2020-07-20 16:23:17,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:17" (1/1) ... [2020-07-20 16:23:17,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:23:17,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:23:17,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:23:17,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:23:17,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:17" (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 16:23:17,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:23:17,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:23:17,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 16:23:17,419 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 16:23:17,420 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 16:23:17,420 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 16:23:17,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 16:23:17,420 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 16:23:17,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 16:23:17,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 16:23:17,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 16:23:17,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 16:23:17,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 16:23:17,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 16:23:17,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 16:23:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 16:23:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 16:23:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 16:23:17,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 16:23:17,424 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 16:23:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 16:23:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 16:23:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 16:23:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 16:23:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:23:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 16:23:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 16:23:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 16:23:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 16:23:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 16:23:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 16:23:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 16:23:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 16:23:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 16:23:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 16:23:17,428 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 16:23:17,428 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 16:23:17,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 16:23:17,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-07-20 16:23:17,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-07-20 16:23:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:23:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 16:23:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 16:23:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 16:23:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 16:23:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 16:23:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 16:23:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 16:23:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 16:23:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 16:23:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:23:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 16:23:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 16:23:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 16:23:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 16:23:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 16:23:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 16:23:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:23:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 16:23:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 16:23:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:23:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 16:23:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 16:23:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:23:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 16:23:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 16:23:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 16:23:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 16:23:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 16:23:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 16:23:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 16:23:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 16:23:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 16:23:17,436 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 16:23:17,436 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 16:23:17,436 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 16:23:17,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-07-20 16:23:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 16:23:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 16:23:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:23:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 16:23:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 16:23:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 16:23:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 16:23:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 16:23:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-07-20 16:23:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 16:23:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 16:23:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 16:23:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 16:23:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 16:23:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:23:17,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 16:23:17,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:23:18,559 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:23:18,560 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 16:23:18,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:23:18 BoogieIcfgContainer [2020-07-20 16:23:18,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:23:18,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:23:18,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:23:18,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:23:18,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:23:16" (1/3) ... [2020-07-20 16:23:18,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38730846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:23:18, skipping insertion in model container [2020-07-20 16:23:18,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:23:17" (2/3) ... [2020-07-20 16:23:18,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38730846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:23:18, skipping insertion in model container [2020-07-20 16:23:18,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:23:18" (3/3) ... [2020-07-20 16:23:18,573 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-07-20 16:23:18,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:23:18,590 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:23:18,600 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:23:18,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:23:18,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:23:18,625 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:23:18,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:23:18,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:23:18,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:23:18,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:23:18,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:23:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-07-20 16:23:18,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 16:23:18,656 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:18,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:23:18,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:18,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:18,663 INFO L82 PathProgramCache]: Analyzing trace with hash 171708589, now seen corresponding path program 1 times [2020-07-20 16:23:18,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:18,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662454886] [2020-07-20 16:23:18,670 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 16:23:19,158 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:23:19,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:19,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:23:19,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:19,204 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 16:23:19,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:19,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662454886] [2020-07-20 16:23:19,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:19,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:23:19,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745859129] [2020-07-20 16:23:19,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:23:19,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:19,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:23:19,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:23:19,229 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 2 states. [2020-07-20 16:23:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:19,270 INFO L93 Difference]: Finished difference Result 242 states and 299 transitions. [2020-07-20 16:23:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:23:19,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2020-07-20 16:23:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:19,286 INFO L225 Difference]: With dead ends: 242 [2020-07-20 16:23:19,286 INFO L226 Difference]: Without dead ends: 123 [2020-07-20 16:23:19,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 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 16:23:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-07-20 16:23:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-07-20 16:23:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-20 16:23:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-07-20 16:23:19,352 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 51 [2020-07-20 16:23:19,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:19,353 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-07-20 16:23:19,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:23:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-07-20 16:23:19,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 16:23:19,363 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:19,363 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 16:23:19,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:19,577 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:19,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:19,579 INFO L82 PathProgramCache]: Analyzing trace with hash -70243324, now seen corresponding path program 1 times [2020-07-20 16:23:19,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:19,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226715424] [2020-07-20 16:23:19,580 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 16:23:20,059 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:23:20,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:20,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:23:20,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:20,107 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 16:23:20,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:20,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226715424] [2020-07-20 16:23:20,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:20,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:23:20,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314576804] [2020-07-20 16:23:20,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:23:20,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:20,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:23:20,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:23:20,112 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 3 states. [2020-07-20 16:23:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:20,131 INFO L93 Difference]: Finished difference Result 178 states and 207 transitions. [2020-07-20 16:23:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:23:20,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 16:23:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:20,134 INFO L225 Difference]: With dead ends: 178 [2020-07-20 16:23:20,134 INFO L226 Difference]: Without dead ends: 114 [2020-07-20 16:23:20,136 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 16:23:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-20 16:23:20,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-07-20 16:23:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-20 16:23:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-07-20 16:23:20,153 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 52 [2020-07-20 16:23:20,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:20,154 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-07-20 16:23:20,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:23:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-07-20 16:23:20,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 16:23:20,159 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:20,160 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 16:23:20,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:20,362 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:20,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:20,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1406294977, now seen corresponding path program 1 times [2020-07-20 16:23:20,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:20,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513182491] [2020-07-20 16:23:20,364 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 16:23:20,807 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:23:20,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:20,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 16:23:20,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:20,858 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 16:23:20,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:20,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513182491] [2020-07-20 16:23:20,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:20,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:23:20,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379060186] [2020-07-20 16:23:20,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:23:20,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:20,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:23:20,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:23:20,863 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 3 states. [2020-07-20 16:23:20,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:20,896 INFO L93 Difference]: Finished difference Result 282 states and 336 transitions. [2020-07-20 16:23:20,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:23:20,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-07-20 16:23:20,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:20,900 INFO L225 Difference]: With dead ends: 282 [2020-07-20 16:23:20,900 INFO L226 Difference]: Without dead ends: 196 [2020-07-20 16:23:20,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 16:23:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-20 16:23:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 184. [2020-07-20 16:23:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-07-20 16:23:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 217 transitions. [2020-07-20 16:23:20,944 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 217 transitions. Word has length 57 [2020-07-20 16:23:20,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:20,945 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 217 transitions. [2020-07-20 16:23:20,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:23:20,947 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 217 transitions. [2020-07-20 16:23:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-20 16:23:20,950 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:20,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:23:21,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:21,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:21,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:21,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1471569046, now seen corresponding path program 1 times [2020-07-20 16:23:21,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:21,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713808260] [2020-07-20 16:23:21,153 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 16:23:21,558 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:23:21,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:21,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 16:23:21,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:21,596 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 16:23:21,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:21,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713808260] [2020-07-20 16:23:21,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:21,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:23:21,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249653318] [2020-07-20 16:23:21,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:23:21,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:21,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:23:21,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:23:21,600 INFO L87 Difference]: Start difference. First operand 184 states and 217 transitions. Second operand 3 states. [2020-07-20 16:23:21,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:21,660 INFO L93 Difference]: Finished difference Result 340 states and 414 transitions. [2020-07-20 16:23:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:23:21,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-07-20 16:23:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:21,672 INFO L225 Difference]: With dead ends: 340 [2020-07-20 16:23:21,672 INFO L226 Difference]: Without dead ends: 337 [2020-07-20 16:23:21,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 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 16:23:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-20 16:23:21,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-07-20 16:23:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-20 16:23:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 410 transitions. [2020-07-20 16:23:21,728 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 410 transitions. Word has length 62 [2020-07-20 16:23:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:21,729 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 410 transitions. [2020-07-20 16:23:21,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:23:21,729 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 410 transitions. [2020-07-20 16:23:21,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-20 16:23:21,734 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:21,734 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, 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] [2020-07-20 16:23:21,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:21,949 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:21,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:21,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1625481668, now seen corresponding path program 1 times [2020-07-20 16:23:21,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:21,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747217233] [2020-07-20 16:23:21,952 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 16:23:22,264 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:23:22,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:22,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:23:22,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 16:23:22,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:22,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747217233] [2020-07-20 16:23:22,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:22,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:23:22,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712232151] [2020-07-20 16:23:22,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:23:22,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:22,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:23:22,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:23:22,340 INFO L87 Difference]: Start difference. First operand 337 states and 410 transitions. Second operand 6 states. [2020-07-20 16:23:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:22,719 INFO L93 Difference]: Finished difference Result 792 states and 1011 transitions. [2020-07-20 16:23:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:23:22,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-07-20 16:23:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:22,728 INFO L225 Difference]: With dead ends: 792 [2020-07-20 16:23:22,729 INFO L226 Difference]: Without dead ends: 483 [2020-07-20 16:23:22,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:23:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-07-20 16:23:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 451. [2020-07-20 16:23:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-07-20 16:23:22,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 556 transitions. [2020-07-20 16:23:22,777 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 556 transitions. Word has length 93 [2020-07-20 16:23:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:22,778 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 556 transitions. [2020-07-20 16:23:22,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:23:22,778 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 556 transitions. [2020-07-20 16:23:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-07-20 16:23:22,785 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:22,786 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, 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] [2020-07-20 16:23:22,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:22,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:22,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:22,994 INFO L82 PathProgramCache]: Analyzing trace with hash -371881838, now seen corresponding path program 1 times [2020-07-20 16:23:22,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:22,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624089955] [2020-07-20 16:23:22,996 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 16:23:23,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:23:23,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:23,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 16:23:23,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-20 16:23:23,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:23,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624089955] [2020-07-20 16:23:23,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:23,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:23:23,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796803567] [2020-07-20 16:23:23,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:23:23,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:23,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:23:23,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:23:23,195 INFO L87 Difference]: Start difference. First operand 451 states and 556 transitions. Second operand 5 states. [2020-07-20 16:23:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:23,235 INFO L93 Difference]: Finished difference Result 902 states and 1157 transitions. [2020-07-20 16:23:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:23:23,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-07-20 16:23:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:23,240 INFO L225 Difference]: With dead ends: 902 [2020-07-20 16:23:23,240 INFO L226 Difference]: Without dead ends: 479 [2020-07-20 16:23:23,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 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 16:23:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-07-20 16:23:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 467. [2020-07-20 16:23:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-07-20 16:23:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 572 transitions. [2020-07-20 16:23:23,271 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 572 transitions. Word has length 120 [2020-07-20 16:23:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:23,272 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 572 transitions. [2020-07-20 16:23:23,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:23:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 572 transitions. [2020-07-20 16:23:23,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-07-20 16:23:23,275 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:23,276 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, 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] [2020-07-20 16:23:23,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:23,491 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:23,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:23,493 INFO L82 PathProgramCache]: Analyzing trace with hash -426274736, now seen corresponding path program 1 times [2020-07-20 16:23:23,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:23,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950319257] [2020-07-20 16:23:23,494 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 16:23:23,828 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:23:23,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:23,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 16:23:23,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-20 16:23:23,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:23,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950319257] [2020-07-20 16:23:23,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:23,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:23:23,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527027332] [2020-07-20 16:23:23,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:23:23,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:23,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:23:23,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:23:23,887 INFO L87 Difference]: Start difference. First operand 467 states and 572 transitions. Second operand 3 states. [2020-07-20 16:23:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:24,003 INFO L93 Difference]: Finished difference Result 749 states and 922 transitions. [2020-07-20 16:23:24,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:23:24,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-07-20 16:23:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:24,010 INFO L225 Difference]: With dead ends: 749 [2020-07-20 16:23:24,010 INFO L226 Difference]: Without dead ends: 310 [2020-07-20 16:23:24,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 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 16:23:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-07-20 16:23:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 302. [2020-07-20 16:23:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-07-20 16:23:24,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 359 transitions. [2020-07-20 16:23:24,034 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 359 transitions. Word has length 120 [2020-07-20 16:23:24,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:24,035 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 359 transitions. [2020-07-20 16:23:24,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:23:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 359 transitions. [2020-07-20 16:23:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-20 16:23:24,037 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:24,038 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, 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] [2020-07-20 16:23:24,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:24,251 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:24,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:24,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1631716096, now seen corresponding path program 1 times [2020-07-20 16:23:24,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:24,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275818000] [2020-07-20 16:23:24,254 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 16:23:24,520 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:23:24,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:24,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 16:23:24,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:23:24,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:24,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275818000] [2020-07-20 16:23:24,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:24,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:23:24,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518017034] [2020-07-20 16:23:24,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:23:24,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:24,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:23:24,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:23:24,594 INFO L87 Difference]: Start difference. First operand 302 states and 359 transitions. Second operand 6 states. [2020-07-20 16:23:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:25,342 INFO L93 Difference]: Finished difference Result 1068 states and 1442 transitions. [2020-07-20 16:23:25,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:23:25,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-07-20 16:23:25,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:25,348 INFO L225 Difference]: With dead ends: 1068 [2020-07-20 16:23:25,348 INFO L226 Difference]: Without dead ends: 794 [2020-07-20 16:23:25,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 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 16:23:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2020-07-20 16:23:25,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 734. [2020-07-20 16:23:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-07-20 16:23:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 932 transitions. [2020-07-20 16:23:25,392 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 932 transitions. Word has length 123 [2020-07-20 16:23:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:25,393 INFO L479 AbstractCegarLoop]: Abstraction has 734 states and 932 transitions. [2020-07-20 16:23:25,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:23:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 932 transitions. [2020-07-20 16:23:25,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-20 16:23:25,397 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:25,397 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, 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] [2020-07-20 16:23:25,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:25,611 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:25,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:25,612 INFO L82 PathProgramCache]: Analyzing trace with hash 912696457, now seen corresponding path program 1 times [2020-07-20 16:23:25,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:25,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247006859] [2020-07-20 16:23:25,614 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 16:23:25,967 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:23:25,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:25,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 16:23:25,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:23:26,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:26,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247006859] [2020-07-20 16:23:26,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:26,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 16:23:26,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478962382] [2020-07-20 16:23:26,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 16:23:26,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:26,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 16:23:26,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:23:26,047 INFO L87 Difference]: Start difference. First operand 734 states and 932 transitions. Second operand 8 states. [2020-07-20 16:23:27,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:27,327 INFO L93 Difference]: Finished difference Result 2188 states and 3035 transitions. [2020-07-20 16:23:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 16:23:27,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-07-20 16:23:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:27,342 INFO L225 Difference]: With dead ends: 2188 [2020-07-20 16:23:27,342 INFO L226 Difference]: Without dead ends: 1482 [2020-07-20 16:23:27,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-07-20 16:23:27,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-07-20 16:23:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1200. [2020-07-20 16:23:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2020-07-20 16:23:27,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1581 transitions. [2020-07-20 16:23:27,475 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1581 transitions. Word has length 127 [2020-07-20 16:23:27,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:27,478 INFO L479 AbstractCegarLoop]: Abstraction has 1200 states and 1581 transitions. [2020-07-20 16:23:27,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 16:23:27,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1581 transitions. [2020-07-20 16:23:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-20 16:23:27,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:27,484 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, 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] [2020-07-20 16:23:27,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:27,699 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:27,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1477535203, now seen corresponding path program 1 times [2020-07-20 16:23:27,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:27,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918449329] [2020-07-20 16:23:27,700 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 16:23:28,164 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:23:28,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:28,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 16:23:28,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 16:23:28,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:28,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918449329] [2020-07-20 16:23:28,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:28,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:23:28,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675504701] [2020-07-20 16:23:28,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:23:28,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:28,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:23:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:23:28,278 INFO L87 Difference]: Start difference. First operand 1200 states and 1581 transitions. Second operand 6 states. [2020-07-20 16:23:28,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:28,692 INFO L93 Difference]: Finished difference Result 3341 states and 4602 transitions. [2020-07-20 16:23:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:23:28,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-07-20 16:23:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:28,709 INFO L225 Difference]: With dead ends: 3341 [2020-07-20 16:23:28,709 INFO L226 Difference]: Without dead ends: 2169 [2020-07-20 16:23:28,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:23:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2020-07-20 16:23:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 1946. [2020-07-20 16:23:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2020-07-20 16:23:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2520 transitions. [2020-07-20 16:23:28,865 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2520 transitions. Word has length 123 [2020-07-20 16:23:28,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:28,866 INFO L479 AbstractCegarLoop]: Abstraction has 1946 states and 2520 transitions. [2020-07-20 16:23:28,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:23:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2520 transitions. [2020-07-20 16:23:28,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-20 16:23:28,874 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:28,874 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, 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] [2020-07-20 16:23:29,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:29,089 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:29,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:29,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1224141689, now seen corresponding path program 1 times [2020-07-20 16:23:29,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:29,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551475730] [2020-07-20 16:23:29,090 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 16:23:29,514 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:23:29,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:29,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:23:29,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 16:23:29,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:29,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551475730] [2020-07-20 16:23:29,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:29,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:23:29,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955643180] [2020-07-20 16:23:29,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:23:29,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:29,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:23:29,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:23:29,556 INFO L87 Difference]: Start difference. First operand 1946 states and 2520 transitions. Second operand 6 states. [2020-07-20 16:23:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:29,734 INFO L93 Difference]: Finished difference Result 3894 states and 5135 transitions. [2020-07-20 16:23:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:23:29,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-07-20 16:23:29,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:29,746 INFO L225 Difference]: With dead ends: 3894 [2020-07-20 16:23:29,746 INFO L226 Difference]: Without dead ends: 1976 [2020-07-20 16:23:29,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 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 16:23:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-07-20 16:23:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2020-07-20 16:23:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-07-20 16:23:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2556 transitions. [2020-07-20 16:23:29,866 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2556 transitions. Word has length 127 [2020-07-20 16:23:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:29,867 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 2556 transitions. [2020-07-20 16:23:29,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:23:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2556 transitions. [2020-07-20 16:23:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-20 16:23:29,872 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:29,873 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, 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] [2020-07-20 16:23:30,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:30,086 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:30,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1147240891, now seen corresponding path program 1 times [2020-07-20 16:23:30,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:30,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938377175] [2020-07-20 16:23:30,087 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:30,238 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:23:30,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:23:30,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 16:23:30,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:23:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 16:23:30,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:23:30,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938377175] [2020-07-20 16:23:30,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:23:30,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:23:30,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246505589] [2020-07-20 16:23:30,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:23:30,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:23:30,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:23:30,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:23:30,271 INFO L87 Difference]: Start difference. First operand 1976 states and 2556 transitions. Second operand 5 states. [2020-07-20 16:23:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:23:30,360 INFO L93 Difference]: Finished difference Result 3692 states and 4869 transitions. [2020-07-20 16:23:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:23:30,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-07-20 16:23:30,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:23:30,373 INFO L225 Difference]: With dead ends: 3692 [2020-07-20 16:23:30,373 INFO L226 Difference]: Without dead ends: 1744 [2020-07-20 16:23:30,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 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 16:23:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-07-20 16:23:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1744. [2020-07-20 16:23:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1744 states. [2020-07-20 16:23:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2202 transitions. [2020-07-20 16:23:30,476 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2202 transitions. Word has length 127 [2020-07-20 16:23:30,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:23:30,477 INFO L479 AbstractCegarLoop]: Abstraction has 1744 states and 2202 transitions. [2020-07-20 16:23:30,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:23:30,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2202 transitions. [2020-07-20 16:23:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-20 16:23:30,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:23:30,480 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:23:30,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:30,695 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:23:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:23:30,695 INFO L82 PathProgramCache]: Analyzing trace with hash 475998026, now seen corresponding path program 1 times [2020-07-20 16:23:30,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:23:30,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288772455] [2020-07-20 16:23:30,696 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:31,136 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:23:31,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:23:31,137 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:23:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:23:31,217 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:23:31,491 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:23:31,491 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:23:31,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:23:31,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:23:31 BoogieIcfgContainer [2020-07-20 16:23:31,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:23:31,896 INFO L168 Benchmark]: Toolchain (without parser) took 15255.58 ms. Allocated memory was 137.4 MB in the beginning and 420.0 MB in the end (delta: 282.6 MB). Free memory was 101.1 MB in the beginning and 285.4 MB in the end (delta: -184.3 MB). Peak memory consumption was 98.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:23:31,896 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 16:23:31,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.24 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 169.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:23:31,898 INFO L168 Benchmark]: Boogie Preprocessor took 119.74 ms. Allocated memory is still 201.3 MB. Free memory was 169.3 MB in the beginning and 165.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:23:31,899 INFO L168 Benchmark]: RCFGBuilder took 1205.00 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 165.1 MB in the beginning and 195.8 MB in the end (delta: -30.7 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2020-07-20 16:23:31,900 INFO L168 Benchmark]: TraceAbstraction took 13325.32 ms. Allocated memory was 232.3 MB in the beginning and 420.0 MB in the end (delta: 187.7 MB). Free memory was 195.8 MB in the beginning and 285.4 MB in the end (delta: -89.5 MB). Peak memory consumption was 98.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:23:31,906 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 600.24 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 169.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.74 ms. Allocated memory is still 201.3 MB. Free memory was 169.3 MB in the beginning and 165.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1205.00 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 165.1 MB in the beginning and 195.8 MB in the end (delta: -30.7 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13325.32 ms. Allocated memory was 232.3 MB in the beginning and 420.0 MB in the end (delta: 187.7 MB). Free memory was 195.8 MB in the beginning and 285.4 MB in the end (delta: -89.5 MB). Peak memory consumption was 98.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 900]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int cleanupTimeShifts = 4; [L651] int pumpRunning = 0; [L652] int systemActive = 1; [L905] int methAndRunningLastTime ; VAL [\old(cleanupTimeShifts)=40, \old(head)=34, \old(head)=88, \old(methAndRunningLastTime)=56, \old(methaneLevelCritical)=97, \old(pumpRunning)=76, \old(systemActive)=37, \old(waterLevel)=89, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L623] int retValue_acc ; [L624] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L628] FCALL select_helpers() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L629] FCALL select_features() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L630] CALL, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L630] RET, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L630] tmp = valid_product() [L632] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L634] FCALL setup() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L635] CALL runTest() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L616] CALL __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L910] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L616] RET __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L617] CALL test() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L828] int splverifierCounter ; [L829] int tmp ; [L830] int tmp___0 ; [L831] int tmp___1 ; [L832] int tmp___2 ; [L835] splverifierCounter = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L837] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L839] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L845] tmp = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L849] CALL waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L849] RET waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L859] CALL changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L859] RET changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___2)) [L873] tmp___1 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___1)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L884] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L659] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L666] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L668] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L688] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L691] COND TRUE ! pumpRunning VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L693] CALL, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L785] int retValue_acc ; [L786] int tmp ; [L787] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L791] CALL, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L127] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L791] RET, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L791] tmp = isHighWaterSensorDry() [L793] COND FALSE !(\read(tmp)) [L796] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L798] retValue_acc = tmp___0 [L799] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L693] RET, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L697] CALL activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L716] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L697] RET activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L668] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L674] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L915] int tmp ; [L916] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L920] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L920] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L924] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L924] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L927] COND FALSE !(\read(methAndRunningLastTime)) [L932] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L674] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L884] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L837] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L839] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L845] tmp = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___2)) [L873] tmp___1 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___1)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L884] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L659] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L661] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L661] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L666] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L668] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L688] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L691] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L706] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L668] RET processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L674] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L915] int tmp ; [L916] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L920] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L920] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L924] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L924] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L927] COND TRUE \read(methAndRunningLastTime) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L929] CALL __automaton_fail() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L900] __VERIFIER_error() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.0s, OverallIterations: 13, TraceHistogramMax: 2, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1828 SDtfs, 1223 SDslu, 2680 SDs, 0 SdLazy, 1646 SolverSat, 505 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1181 GetRequests, 1142 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1976occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 629 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1313 NumberOfCodeBlocks, 930 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1170 ConstructedInterpolants, 0 QuantifiedInterpolants, 203118 SizeOfPredicates, 28 NumberOfNonLiveVariables, 8221 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 241/241 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...