/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 10:10:28,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 10:10:28,503 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 10:10:28,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 10:10:28,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 10:10:28,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 10:10:28,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 10:10:28,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 10:10:28,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 10:10:28,523 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 10:10:28,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 10:10:28,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 10:10:28,524 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 10:10:28,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 10:10:28,525 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 10:10:28,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 10:10:28,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 10:10:28,526 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 10:10:28,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 10:10:28,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 10:10:28,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 10:10:28,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 10:10:28,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 10:10:28,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 10:10:28,527 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 10:10:28,527 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 10:10:28,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 10:10:28,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 10:10:28,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 10:10:28,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 10:10:28,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 10:10:28,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 10:10:28,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:10:28,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 10:10:28,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 10:10:28,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 10:10:28,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 10:10:28,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 10:10:28,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 10:10:28,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 10:10:28,530 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 10:10:28,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 10:10:28,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 10:10:28,531 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 10:10:28,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 10:10:28,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 10:10:28,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 10:10:28,727 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 10:10:28,728 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 10:10:28,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2023-12-21 10:10:29,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 10:10:30,035 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 10:10:30,035 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2023-12-21 10:10:30,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240bb606e/7ba64c95693b43ca959c38e1966d60a2/FLAGf3e533610 [2023-12-21 10:10:30,060 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240bb606e/7ba64c95693b43ca959c38e1966d60a2 [2023-12-21 10:10:30,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 10:10:30,063 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 10:10:30,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 10:10:30,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 10:10:30,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 10:10:30,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4b8f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30, skipping insertion in model container [2023-12-21 10:10:30,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,094 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 10:10:30,214 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c[6162,6175] [2023-12-21 10:10:30,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:10:30,301 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 10:10:30,310 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2023-12-21 10:10:30,311 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [160] [2023-12-21 10:10:30,311 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [388] [2023-12-21 10:10:30,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [397] [2023-12-21 10:10:30,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [467] [2023-12-21 10:10:30,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [566] [2023-12-21 10:10:30,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [592] [2023-12-21 10:10:30,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [958] [2023-12-21 10:10:30,324 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c[6162,6175] [2023-12-21 10:10:30,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:10:30,382 INFO L206 MainTranslator]: Completed translation [2023-12-21 10:10:30,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30 WrapperNode [2023-12-21 10:10:30,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 10:10:30,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 10:10:30,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 10:10:30,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 10:10:30,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,428 INFO L138 Inliner]: procedures = 57, calls = 101, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 204 [2023-12-21 10:10:30,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 10:10:30,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 10:10:30,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 10:10:30,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 10:10:30,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,457 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 10:10:30,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 10:10:30,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 10:10:30,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 10:10:30,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 10:10:30,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (1/1) ... [2023-12-21 10:10:30,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:10:30,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:10:30,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 10:10:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 10:10:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-21 10:10:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-21 10:10:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-21 10:10:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-21 10:10:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-21 10:10:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-21 10:10:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-12-21 10:10:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-12-21 10:10:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-21 10:10:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-21 10:10:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-21 10:10:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-21 10:10:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-21 10:10:30,585 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-21 10:10:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 10:10:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-21 10:10:30,585 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-21 10:10:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 10:10:30,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 10:10:30,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 10:10:30,665 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 10:10:30,667 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 10:10:30,890 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 10:10:30,933 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 10:10:30,933 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 10:10:30,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:10:30 BoogieIcfgContainer [2023-12-21 10:10:30,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 10:10:30,958 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 10:10:30,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 10:10:30,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 10:10:30,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:10:30" (1/3) ... [2023-12-21 10:10:30,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6968f880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:10:30, skipping insertion in model container [2023-12-21 10:10:30,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:10:30" (2/3) ... [2023-12-21 10:10:30,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6968f880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:10:30, skipping insertion in model container [2023-12-21 10:10:30,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:10:30" (3/3) ... [2023-12-21 10:10:30,963 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2023-12-21 10:10:30,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 10:10:30,983 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 10:10:31,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 10:10:31,028 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e7b7d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 10:10:31,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 10:10:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 50 states have (on average 1.54) internal successors, (77), 59 states have internal predecessors, (77), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-21 10:10:31,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 10:10:31,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:10:31,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:10:31,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:10:31,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:10:31,042 INFO L85 PathProgramCache]: Analyzing trace with hash -461333429, now seen corresponding path program 1 times [2023-12-21 10:10:31,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:10:31,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276141987] [2023-12-21 10:10:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:10:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:10:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 10:10:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:10:31,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:10:31,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276141987] [2023-12-21 10:10:31,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276141987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:10:31,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:10:31,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 10:10:31,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375167446] [2023-12-21 10:10:31,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:10:31,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 10:10:31,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:10:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 10:10:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 10:10:31,229 INFO L87 Difference]: Start difference. First operand has 73 states, 50 states have (on average 1.54) internal successors, (77), 59 states have internal predecessors, (77), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:10:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:10:31,264 INFO L93 Difference]: Finished difference Result 144 states and 207 transitions. [2023-12-21 10:10:31,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 10:10:31,266 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-21 10:10:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:10:31,272 INFO L225 Difference]: With dead ends: 144 [2023-12-21 10:10:31,272 INFO L226 Difference]: Without dead ends: 68 [2023-12-21 10:10:31,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 10:10:31,276 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:10:31,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:10:31,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-21 10:10:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-21 10:10:31,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 47 states have (on average 1.425531914893617) internal successors, (67), 55 states have internal predecessors, (67), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 10:10:31,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 92 transitions. [2023-12-21 10:10:31,303 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 92 transitions. Word has length 16 [2023-12-21 10:10:31,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:10:31,303 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 92 transitions. [2023-12-21 10:10:31,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:10:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 92 transitions. [2023-12-21 10:10:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 10:10:31,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:10:31,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:10:31,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 10:10:31,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:10:31,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:10:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1587365836, now seen corresponding path program 1 times [2023-12-21 10:10:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:10:31,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507948198] [2023-12-21 10:10:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:10:31,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:10:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 10:10:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:10:31,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:10:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507948198] [2023-12-21 10:10:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507948198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:10:31,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:10:31,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 10:10:31,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075853418] [2023-12-21 10:10:31,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:10:31,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:10:31,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:10:31,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:10:31,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 10:10:31,372 INFO L87 Difference]: Start difference. First operand 68 states and 92 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:10:31,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:10:31,395 INFO L93 Difference]: Finished difference Result 106 states and 142 transitions. [2023-12-21 10:10:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:10:31,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-12-21 10:10:31,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:10:31,397 INFO L225 Difference]: With dead ends: 106 [2023-12-21 10:10:31,397 INFO L226 Difference]: Without dead ends: 60 [2023-12-21 10:10:31,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 10:10:31,398 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 14 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:10:31,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 120 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:10:31,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-21 10:10:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-21 10:10:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 50 states have internal predecessors, (61), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 10:10:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2023-12-21 10:10:31,404 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 17 [2023-12-21 10:10:31,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:10:31,404 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2023-12-21 10:10:31,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:10:31,404 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2023-12-21 10:10:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 10:10:31,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:10:31,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:10:31,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 10:10:31,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:10:31,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:10:31,406 INFO L85 PathProgramCache]: Analyzing trace with hash -402928600, now seen corresponding path program 1 times [2023-12-21 10:10:31,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:10:31,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364261821] [2023-12-21 10:10:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:10:31,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:10:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 10:10:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:10:31,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:10:31,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364261821] [2023-12-21 10:10:31,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364261821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:10:31,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:10:31,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 10:10:31,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447626574] [2023-12-21 10:10:31,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:10:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:10:31,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:10:31,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:10:31,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 10:10:31,469 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:10:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:10:31,522 INFO L93 Difference]: Finished difference Result 176 states and 240 transitions. [2023-12-21 10:10:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:10:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-12-21 10:10:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:10:31,524 INFO L225 Difference]: With dead ends: 176 [2023-12-21 10:10:31,524 INFO L226 Difference]: Without dead ends: 118 [2023-12-21 10:10:31,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 10:10:31,525 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 75 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:10:31,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 143 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:10:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-21 10:10:31,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2023-12-21 10:10:31,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 80 states have (on average 1.4625) internal successors, (117), 95 states have internal predecessors, (117), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (20), 13 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 10:10:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 157 transitions. [2023-12-21 10:10:31,538 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 157 transitions. Word has length 20 [2023-12-21 10:10:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:10:31,538 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 157 transitions. [2023-12-21 10:10:31,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:10:31,538 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 157 transitions. [2023-12-21 10:10:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 10:10:31,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:10:31,539 INFO L195 NwaCegarLoop]: 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] [2023-12-21 10:10:31,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 10:10:31,539 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:10:31,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:10:31,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2061931373, now seen corresponding path program 1 times [2023-12-21 10:10:31,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:10:31,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559491022] [2023-12-21 10:10:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:10:31,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:10:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 10:10:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:10:31,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:10:31,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559491022] [2023-12-21 10:10:31,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559491022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:10:31,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:10:31,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 10:10:31,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426134527] [2023-12-21 10:10:31,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:10:31,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 10:10:31,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:10:31,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 10:10:31,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 10:10:31,599 INFO L87 Difference]: Start difference. First operand 115 states and 157 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:10:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:10:31,686 INFO L93 Difference]: Finished difference Result 306 states and 425 transitions. [2023-12-21 10:10:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:10:31,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-12-21 10:10:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:10:31,692 INFO L225 Difference]: With dead ends: 306 [2023-12-21 10:10:31,692 INFO L226 Difference]: Without dead ends: 193 [2023-12-21 10:10:31,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 10:10:31,700 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 56 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:10:31,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 182 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:10:31,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-21 10:10:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2023-12-21 10:10:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 133 states have (on average 1.3909774436090225) internal successors, (185), 148 states have internal predecessors, (185), 28 states have call successors, (28), 26 states have call predecessors, (28), 26 states have return successors, (36), 25 states have call predecessors, (36), 28 states have call successors, (36) [2023-12-21 10:10:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 249 transitions. [2023-12-21 10:10:31,723 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 249 transitions. Word has length 23 [2023-12-21 10:10:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:10:31,723 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 249 transitions. [2023-12-21 10:10:31,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:10:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 249 transitions. [2023-12-21 10:10:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 10:10:31,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:10:31,725 INFO L195 NwaCegarLoop]: 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] [2023-12-21 10:10:31,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 10:10:31,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:10:31,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:10:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash -606223895, now seen corresponding path program 1 times [2023-12-21 10:10:31,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:10:31,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857742390] [2023-12-21 10:10:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:10:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:10:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 10:10:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:10:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:10:31,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:10:31,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857742390] [2023-12-21 10:10:31,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857742390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:10:31,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:10:31,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 10:10:31,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671941278] [2023-12-21 10:10:31,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:10:31,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:10:31,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:10:31,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:10:31,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 10:10:31,835 INFO L87 Difference]: Start difference. First operand 188 states and 249 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:10:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:10:31,952 INFO L93 Difference]: Finished difference Result 416 states and 557 transitions. [2023-12-21 10:10:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:10:31,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-12-21 10:10:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:10:31,958 INFO L225 Difference]: With dead ends: 416 [2023-12-21 10:10:31,958 INFO L226 Difference]: Without dead ends: 230 [2023-12-21 10:10:31,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:10:31,961 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 47 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:10:31,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 177 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:10:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-21 10:10:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2023-12-21 10:10:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 163 states have (on average 1.3558282208588956) internal successors, (221), 178 states have internal predecessors, (221), 32 states have call successors, (32), 26 states have call predecessors, (32), 32 states have return successors, (46), 33 states have call predecessors, (46), 32 states have call successors, (46) [2023-12-21 10:10:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 299 transitions. [2023-12-21 10:10:31,999 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 299 transitions. Word has length 32 [2023-12-21 10:10:31,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:10:31,999 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 299 transitions. [2023-12-21 10:10:31,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:10:31,999 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 299 transitions. [2023-12-21 10:10:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 10:10:32,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:10:32,006 INFO L195 NwaCegarLoop]: 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] [2023-12-21 10:10:32,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 10:10:32,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:10:32,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:10:32,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1617341145, now seen corresponding path program 1 times [2023-12-21 10:10:32,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:10:32,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511724696] [2023-12-21 10:10:32,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:10:32,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:10:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 10:10:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:32,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:10:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:10:32,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:10:32,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511724696] [2023-12-21 10:10:32,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511724696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:10:32,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:10:32,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:10:32,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922107840] [2023-12-21 10:10:32,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:10:32,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:10:32,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:10:32,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:10:32,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:10:32,106 INFO L87 Difference]: Start difference. First operand 228 states and 299 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:10:32,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:10:32,303 INFO L93 Difference]: Finished difference Result 476 states and 637 transitions. [2023-12-21 10:10:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 10:10:32,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-12-21 10:10:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:10:32,306 INFO L225 Difference]: With dead ends: 476 [2023-12-21 10:10:32,306 INFO L226 Difference]: Without dead ends: 250 [2023-12-21 10:10:32,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:10:32,309 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 167 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:10:32,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 262 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:10:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-21 10:10:32,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2023-12-21 10:10:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 167 states have (on average 1.347305389221557) internal successors, (225), 182 states have internal predecessors, (225), 32 states have call successors, (32), 26 states have call predecessors, (32), 32 states have return successors, (46), 33 states have call predecessors, (46), 32 states have call successors, (46) [2023-12-21 10:10:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 303 transitions. [2023-12-21 10:10:32,329 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 303 transitions. Word has length 32 [2023-12-21 10:10:32,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:10:32,329 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 303 transitions. [2023-12-21 10:10:32,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:10:32,330 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 303 transitions. [2023-12-21 10:10:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 10:10:32,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:10:32,332 INFO L195 NwaCegarLoop]: 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] [2023-12-21 10:10:32,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 10:10:32,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:10:32,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:10:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1656557797, now seen corresponding path program 1 times [2023-12-21 10:10:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:10:32,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880850414] [2023-12-21 10:10:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:10:32,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:10:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:32,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 10:10:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:10:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:10:32,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:10:32,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880850414] [2023-12-21 10:10:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880850414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:10:32,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:10:32,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 10:10:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142281070] [2023-12-21 10:10:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:10:32,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:10:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:10:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:10:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 10:10:32,406 INFO L87 Difference]: Start difference. First operand 232 states and 303 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:10:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:10:32,609 INFO L93 Difference]: Finished difference Result 765 states and 1073 transitions. [2023-12-21 10:10:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:10:32,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-12-21 10:10:32,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:10:32,612 INFO L225 Difference]: With dead ends: 765 [2023-12-21 10:10:32,612 INFO L226 Difference]: Without dead ends: 535 [2023-12-21 10:10:32,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:10:32,614 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 176 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:10:32,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 262 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 10:10:32,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-12-21 10:10:32,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 527. [2023-12-21 10:10:32,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 378 states have (on average 1.335978835978836) internal successors, (505), 407 states have internal predecessors, (505), 78 states have call successors, (78), 71 states have call predecessors, (78), 70 states have return successors, (128), 72 states have call predecessors, (128), 78 states have call successors, (128) [2023-12-21 10:10:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 711 transitions. [2023-12-21 10:10:32,635 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 711 transitions. Word has length 32 [2023-12-21 10:10:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:10:32,635 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 711 transitions. [2023-12-21 10:10:32,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:10:32,635 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 711 transitions. [2023-12-21 10:10:32,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 10:10:32,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:10:32,636 INFO L195 NwaCegarLoop]: 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] [2023-12-21 10:10:32,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 10:10:32,636 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:10:32,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:10:32,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1849989493, now seen corresponding path program 1 times [2023-12-21 10:10:32,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:10:32,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860445328] [2023-12-21 10:10:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:10:32,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:10:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:32,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-21 10:10:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:32,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 10:10:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:32,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 10:10:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:10:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:10:32,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:10:32,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860445328] [2023-12-21 10:10:32,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860445328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:10:32,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:10:32,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 10:10:32,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680487789] [2023-12-21 10:10:32,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:10:32,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 10:10:32,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:10:32,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 10:10:32,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:10:32,707 INFO L87 Difference]: Start difference. First operand 527 states and 711 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 10:10:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:10:33,118 INFO L93 Difference]: Finished difference Result 1781 states and 2491 transitions. [2023-12-21 10:10:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 10:10:33,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-12-21 10:10:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:10:33,127 INFO L225 Difference]: With dead ends: 1781 [2023-12-21 10:10:33,127 INFO L226 Difference]: Without dead ends: 1256 [2023-12-21 10:10:33,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2023-12-21 10:10:33,129 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 253 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:10:33,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 254 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 10:10:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2023-12-21 10:10:33,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1225. [2023-12-21 10:10:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 872 states have (on average 1.2855504587155964) internal successors, (1121), 945 states have internal predecessors, (1121), 192 states have call successors, (192), 142 states have call predecessors, (192), 160 states have return successors, (348), 184 states have call predecessors, (348), 192 states have call successors, (348) [2023-12-21 10:10:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1661 transitions. [2023-12-21 10:10:33,194 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1661 transitions. Word has length 36 [2023-12-21 10:10:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:10:33,195 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1661 transitions. [2023-12-21 10:10:33,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 10:10:33,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1661 transitions. [2023-12-21 10:10:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 10:10:33,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:10:33,196 INFO L195 NwaCegarLoop]: 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] [2023-12-21 10:10:33,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 10:10:33,196 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:10:33,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:10:33,197 INFO L85 PathProgramCache]: Analyzing trace with hash 739372847, now seen corresponding path program 1 times [2023-12-21 10:10:33,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:10:33,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388759938] [2023-12-21 10:10:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:10:33,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:10:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-21 10:10:33,210 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-21 10:10:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-21 10:10:33,238 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-21 10:10:33,238 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-21 10:10:33,239 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 10:10:33,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 10:10:33,242 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:10:33,245 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 10:10:33,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 10:10:33 BoogieIcfgContainer [2023-12-21 10:10:33,286 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 10:10:33,287 INFO L158 Benchmark]: Toolchain (without parser) took 3223.69ms. Allocated memory is still 285.2MB. Free memory was 235.9MB in the beginning and 183.3MB in the end (delta: 52.6MB). Peak memory consumption was 54.1MB. Max. memory is 8.0GB. [2023-12-21 10:10:33,287 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 175.1MB. Free memory was 127.4MB in the beginning and 127.2MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 10:10:33,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.78ms. Allocated memory is still 285.2MB. Free memory was 235.8MB in the beginning and 215.9MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-21 10:10:33,287 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.74ms. Allocated memory is still 285.2MB. Free memory was 215.6MB in the beginning and 213.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 10:10:33,287 INFO L158 Benchmark]: Boogie Preprocessor took 37.33ms. Allocated memory is still 285.2MB. Free memory was 213.5MB in the beginning and 211.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 10:10:33,287 INFO L158 Benchmark]: RCFGBuilder took 466.68ms. Allocated memory is still 285.2MB. Free memory was 211.1MB in the beginning and 189.7MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-21 10:10:33,288 INFO L158 Benchmark]: TraceAbstraction took 2327.88ms. Allocated memory is still 285.2MB. Free memory was 253.4MB in the beginning and 183.3MB in the end (delta: 70.1MB). Peak memory consumption was 70.1MB. Max. memory is 8.0GB. [2023-12-21 10:10:33,288 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 175.1MB. Free memory was 127.4MB in the beginning and 127.2MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 318.78ms. Allocated memory is still 285.2MB. Free memory was 235.8MB in the beginning and 215.9MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.74ms. Allocated memory is still 285.2MB. Free memory was 215.6MB in the beginning and 213.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.33ms. Allocated memory is still 285.2MB. Free memory was 213.5MB in the beginning and 211.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 466.68ms. Allocated memory is still 285.2MB. Free memory was 211.1MB in the beginning and 189.7MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2327.88ms. Allocated memory is still 285.2MB. Free memory was 253.4MB in the beginning and 183.3MB in the end (delta: 70.1MB). Peak memory consumption was 70.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] - GenericResultAtLocation [Line: 160]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [160] - GenericResultAtLocation [Line: 388]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [388] - GenericResultAtLocation [Line: 397]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [397] - GenericResultAtLocation [Line: 467]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [467] - GenericResultAtLocation [Line: 566]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [566] - GenericResultAtLocation [Line: 592]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [592] - GenericResultAtLocation [Line: 958]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [958] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 393]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L168] int pumpRunning = 0; [L169] int systemActive = 1; [L468] int cleanupTimeShifts = 4; [L762] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L544] int retValue_acc ; [L545] int tmp ; [L549] FCALL select_helpers() [L550] FCALL select_features() [L551] CALL, EXPR valid_product() [L985] int retValue_acc ; [L988] retValue_acc = 1 [L989] return (retValue_acc); [L551] RET, EXPR valid_product() [L551] tmp = valid_product() [L553] COND TRUE \read(tmp) [L555] FCALL setup() [L556] CALL runTest() [L535] CALL test() [L400] int splverifierCounter ; [L401] int tmp ; [L402] int tmp___0 ; [L403] int tmp___1 ; [L404] int tmp___2 ; [L407] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L409] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L411] COND TRUE splverifierCounter < 4 [L417] tmp = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L421] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L76] COND TRUE waterLevel < 2 [L77] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L421] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L427] tmp___0 = __VERIFIER_nondet_int() [L429] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L431] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L88] COND FALSE !(\read(methaneLevelCritical)) [L91] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L431] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L437] tmp___2 = __VERIFIER_nondet_int() [L439] COND TRUE \read(tmp___2) [L441] CALL startSystem() [L384] systemActive = 1 [L441] RET startSystem() [L456] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L176] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L183] COND TRUE \read(systemActive) [L185] CALL processEnvironment() [L231] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L234] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L249] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L205] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L208] COND TRUE ! pumpRunning [L210] CALL, EXPR isHighWaterLevel() [L328] int retValue_acc ; [L329] int tmp ; [L330] int tmp___0 ; [L334] CALL, EXPR isHighWaterSensorDry() [L138] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L141] COND FALSE !(waterLevel < 2) [L145] retValue_acc = 0 [L146] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L334] RET, EXPR isHighWaterSensorDry() [L334] tmp = isHighWaterSensorDry() [L336] COND FALSE !(\read(tmp)) [L339] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L341] retValue_acc = tmp___0 [L342] return (retValue_acc); [L210] RET, EXPR isHighWaterLevel() [L210] tmp = isHighWaterLevel() [L212] COND TRUE \read(tmp) [L214] CALL activatePump() [L259] pumpRunning = 1 [L214] RET activatePump() [L249] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L185] RET processEnvironment() [L191] CALL __utac_acc__Specification1_spec__1() [L568] int tmp ; [L569] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L573] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); [L573] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L573] tmp = isMethaneLevelCritical() [L575] COND TRUE \read(tmp) [L577] CALL, EXPR isPumpRunning() [L283] int retValue_acc ; [L286] retValue_acc = pumpRunning [L287] return (retValue_acc); [L577] RET, EXPR isPumpRunning() [L577] tmp___0 = isPumpRunning() [L579] COND TRUE \read(tmp___0) [L581] CALL __automaton_fail() [L393] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 813 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 788 mSDsluCounter, 1482 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 906 mSDsCounter, 227 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 986 IncrementalHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 227 mSolverCounterUnsat, 576 mSDtfsCounter, 986 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1225occurred in iteration=8, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 67 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 248 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-21 10:10:33,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...